glibc: bump to 2.26

In file included from ../../../libgcc/unwind-dw2.c:403:0:
./md-unwind-support.h: In function ??aarch64_fallback_frame_state??:
./md-unwind-support.h:58:21: error: field ??uc?? has incomplete type

     struct ucontext uc;
                     ^~

The fix is already included in gcc 7.2 release [1]. We have to backport it to all older gcc release since it's not included in any stable release yet.

[1] https://gcc.gnu.org/git/?p=gcc.git;a=commit;h=14c2f22a1877f6b60a2f7c2f83ffb032759456a6

Signed-off-by Romain Naour <[email protected]>

Cc Thomas Petazzoni <[email protected]>

Cc "Yann E. MORIN" <[email protected]>

---
v3: use upstream commit for gcc 5 and 6. (Yann)

---
 ...t_t-not-struct-ucontext-in-linux-unwind.h.patch | 190 ++++++++++++++++++++
 ...t_t-not-struct-ucontext-in-linux-unwind.h.patch | 192 +++++++++++++++++++++
 ...t_t-not-struct-ucontext-in-linux-unwind.h.patch | 192 +++++++++++++++++++++
 3 files changed, 574 insertions(+)
 create mode 100644 package/gcc/4.9.4/943-Use-ucontext_t-not-struct-ucontext-in-linux-unwind.h.patch
 create mode 100644 package/gcc/5.4.0/943-Use-ucontext_t-not-struct-ucontext-in-linux-unwind.h.patch
 create mode 100644 package/gcc/6.4.0/942-Use-ucontext_t-not-struct-ucontext-in-linux-unwind.h.patch

package/gcc/4.9.4/943-Use-ucontext_t-not-struct-ucontext-in-linux-unwind.h.patch new file +190 -0

new file mode 100644
index 0000000..526346c
@@ -0,0 +1,190 @@
+From b7e85069238c40eae54d0ca03ab6d5470d1815f9 Mon Sep 17 00:00:00 2001
+From: jsm28 <jsm28@138bc75d-0d04-0410-961f-82ee72b054a4>
+Date: Tue, 4 Jul 2017 10:25:10 +0000
+Subject: [PATCH] Use ucontext_t not struct ucontext in linux-unwind.h files.
+
+Current glibc no longer gives the ucontext_t type the tag struct
+ucontext, to conform with POSIX namespace rules.  This requires
+various linux-unwind.h files in libgcc, that were previously using
+struct ucontext, to be fixed to use ucontext_t instead.  This is
+similar to the removal of the struct siginfo tag from siginfo_t some
+years ago.
+
+This patch changes those files to use ucontext_t instead.  As the
+standard name that should be unconditionally safe, so this is not
+restricted to architectures supported by glibc, or conditioned on the
+glibc version.
+
+Tested compilation together with current glibc with glibc's
+build-many-glibcs.py.
+
+	* config/aarch64/linux-unwind.h (aarch64_fallback_frame_state),
+	config/alpha/linux-unwind.h (alpha_fallback_frame_state),
+	config/bfin/linux-unwind.h (bfin_fallback_frame_state),
+	config/i386/linux-unwind.h (x86_64_fallback_frame_state,
+	x86_fallback_frame_state), config/m68k/linux-unwind.h (struct
+	uw_ucontext), config/nios2/linux-unwind.h (struct nios2_ucontext),
+	config/pa/linux-unwind.h (pa32_fallback_frame_state),
+	config/sh/linux-unwind.h (sh_fallback_frame_state),
+	config/tilepro/linux-unwind.h (tile_fallback_frame_state),
+	config/xtensa/linux-unwind.h (xtensa_fallback_frame_state): Use
+	ucontext_t instead of struct ucontext.
+
+git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-5-branch at 249958 138bc75d-0d04-0410-961f-82ee72b054a4
+[Romain backport from gcc-5-branch]
+Signed-off-by: Romain Naour <[email protected]>
+---
+ libgcc/config/aarch64/linux-unwind.h | 2 +-
+ libgcc/config/alpha/linux-unwind.h   | 2 +-
+ libgcc/config/bfin/linux-unwind.h    | 2 +-
+ libgcc/config/i386/linux-unwind.h    | 4 ++--
+ libgcc/config/m68k/linux-unwind.h    | 2 +-
+ libgcc/config/nios2/linux-unwind.h   | 2 +-
+ libgcc/config/pa/linux-unwind.h      | 2 +-
+ libgcc/config/sh/linux-unwind.h      | 2 +-
+ libgcc/config/tilepro/linux-unwind.h | 2 +-
+ libgcc/config/xtensa/linux-unwind.h  | 2 +-
+ 10 files changed, 11 insertions(+), 11 deletions(-)
+
+diff --git a/libgcc/config/aarch64/linux-unwind.h b/libgcc/config/aarch64/linux-unwind.h
+index 6b5b3cd..d13dc34 100644
+--- a/libgcc/config/aarch64/linux-unwind.h
++++ b/libgcc/config/aarch64/linux-unwind.h
+@@ -52,7 +52,7 @@ aarch64_fallback_frame_state (struct _Unwind_Context *context,
+   struct rt_sigframe
+   {
+     siginfo_t info;
+-    struct ucontext uc;
++    ucontext_t uc;
+   };
+ 
+   struct rt_sigframe *rt_;
+diff --git a/libgcc/config/alpha/linux-unwind.h b/libgcc/config/alpha/linux-unwind.h
+index b5bfd1c..166d3d2 100644
+--- a/libgcc/config/alpha/linux-unwind.h
++++ b/libgcc/config/alpha/linux-unwind.h
+@@ -51,7 +51,7 @@ alpha_fallback_frame_state (struct _Unwind_Context *context,
+     {
+       struct rt_sigframe {
+ 	siginfo_t info;
+-	struct ucontext uc;
++	ucontext_t uc;
+       } *rt_ = context->cfa;
+       sc = &rt_->uc.uc_mcontext;
+     }
+diff --git a/libgcc/config/bfin/linux-unwind.h b/libgcc/config/bfin/linux-unwind.h
+index dc58f0a..8b94568 100644
+--- a/libgcc/config/bfin/linux-unwind.h
++++ b/libgcc/config/bfin/linux-unwind.h
+@@ -52,7 +52,7 @@ bfin_fallback_frame_state (struct _Unwind_Context *context,
+ 	void *puc;
+ 	char retcode[8];
+ 	siginfo_t info;
+-	struct ucontext uc;
++	ucontext_t uc;
+       } *rt_ = context->cfa;
+ 
+       /* The void * cast is necessary to avoid an aliasing warning.
+diff --git a/libgcc/config/i386/linux-unwind.h b/libgcc/config/i386/linux-unwind.h
+index 7986928..a9d621c 100644
+--- a/libgcc/config/i386/linux-unwind.h
++++ b/libgcc/config/i386/linux-unwind.h
+@@ -58,7 +58,7 @@ x86_64_fallback_frame_state (struct _Unwind_Context *context,
+   if (*(unsigned char *)(pc+0) == 0x48
+       && *(unsigned long long *)(pc+1) == RT_SIGRETURN_SYSCALL)
+     {
+-      struct ucontext *uc_ = context->cfa;
++      ucontext_t *uc_ = context->cfa;
+       /* The void * cast is necessary to avoid an aliasing warning.
+          The aliasing warning is correct, but should not be a problem
+          because it does not alias anything.  */
+@@ -138,7 +138,7 @@ x86_fallback_frame_state (struct _Unwind_Context *context,
+ 	siginfo_t *pinfo;
+ 	void *puc;
+ 	siginfo_t info;
+-	struct ucontext uc;
++	ucontext_t uc;
+       } *rt_ = context->cfa;
+       /* The void * cast is necessary to avoid an aliasing warning.
+          The aliasing warning is correct, but should not be a problem
+diff --git a/libgcc/config/m68k/linux-unwind.h b/libgcc/config/m68k/linux-unwind.h
+index 1ba2a0c4..d67767e 100644
+--- a/libgcc/config/m68k/linux-unwind.h
++++ b/libgcc/config/m68k/linux-unwind.h
+@@ -33,7 +33,7 @@ see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+ /* <sys/ucontext.h> is unfortunately broken right now.  */
+ struct uw_ucontext {
+ 	unsigned long	  uc_flags;
+-	struct ucontext  *uc_link;
++	ucontext_t	 *uc_link;
+ 	stack_t		  uc_stack;
+ 	mcontext_t	  uc_mcontext;
+ 	unsigned long	  uc_filler[80];
+diff --git a/libgcc/config/nios2/linux-unwind.h b/libgcc/config/nios2/linux-unwind.h
+index ba4bd80..8978868 100644
+--- a/libgcc/config/nios2/linux-unwind.h
++++ b/libgcc/config/nios2/linux-unwind.h
+@@ -38,7 +38,7 @@ struct nios2_mcontext {
+ 
+ struct nios2_ucontext {
+   unsigned long uc_flags;
+-  struct ucontext *uc_link;
++  ucontext_t *uc_link;
+   stack_t uc_stack;
+   struct nios2_mcontext uc_mcontext;
+   sigset_t uc_sigmask;	/* mask last for extensibility */
+diff --git a/libgcc/config/pa/linux-unwind.h b/libgcc/config/pa/linux-unwind.h
+index 4a3cfff..d2ac437 100644
+--- a/libgcc/config/pa/linux-unwind.h
++++ b/libgcc/config/pa/linux-unwind.h
+@@ -80,7 +80,7 @@ pa32_fallback_frame_state (struct _Unwind_Context *context,
+   struct sigcontext *sc;
+   struct rt_sigframe {
+     siginfo_t info;
+-    struct ucontext uc;
++    ucontext_t uc;
+   } *frame;
+ 
+   /* rt_sigreturn trampoline:
+diff --git a/libgcc/config/sh/linux-unwind.h b/libgcc/config/sh/linux-unwind.h
+index 4875706..671bde7 100644
+--- a/libgcc/config/sh/linux-unwind.h
++++ b/libgcc/config/sh/linux-unwind.h
+@@ -180,7 +180,7 @@ sh_fallback_frame_state (struct _Unwind_Context *context,
+     {
+       struct rt_sigframe {
+ 	siginfo_t info;
+-	struct ucontext uc;
++	ucontext_t uc;
+       } *rt_ = context->cfa;
+       /* The void * cast is necessary to avoid an aliasing warning.
+          The aliasing warning is correct, but should not be a problem
+diff --git a/libgcc/config/tilepro/linux-unwind.h b/libgcc/config/tilepro/linux-unwind.h
+index 27481cf..c24d58c 100644
+--- a/libgcc/config/tilepro/linux-unwind.h
++++ b/libgcc/config/tilepro/linux-unwind.h
+@@ -61,7 +61,7 @@ tile_fallback_frame_state (struct _Unwind_Context *context,
+   struct rt_sigframe {
+     unsigned char save_area[C_ABI_SAVE_AREA_SIZE];
+     siginfo_t info;
+-    struct ucontext uc;
++    ucontext_t uc;
+   } *rt_;
+ 
+   /* Return if this is not a signal handler.  */
+diff --git a/libgcc/config/xtensa/linux-unwind.h b/libgcc/config/xtensa/linux-unwind.h
+index 6832d0b..cb15b4c 100644
+--- a/libgcc/config/xtensa/linux-unwind.h
++++ b/libgcc/config/xtensa/linux-unwind.h
+@@ -63,7 +63,7 @@ xtensa_fallback_frame_state (struct _Unwind_Context *context,
+ 
+   struct rt_sigframe {
+     siginfo_t info;
+-    struct ucontext uc;
++    ucontext_t uc;
+   } *rt_;
+ 
+   /* movi a2, __NR_rt_sigreturn; syscall */
+-- 
+2.9.5
+

package/gcc/5.4.0/943-Use-ucontext_t-not-struct-ucontext-in-linux-unwind.h.patch new file +192 -0

new file mode 100644
index 0000000..4c3385d
@@ -0,0 +1,192 @@
+From c287e88cc3743bfa7e5719bc4dee327aa3950051 Mon Sep 17 00:00:00 2001
+From: jsm28 <jsm28@138bc75d-0d04-0410-961f-82ee72b054a4>
+Date: Tue, 4 Jul 2017 10:25:10 +0000
+Subject: [PATCH] Use ucontext_t not struct ucontext in linux-unwind.h files.
+
+Current glibc no longer gives the ucontext_t type the tag struct
+ucontext, to conform with POSIX namespace rules.  This requires
+various linux-unwind.h files in libgcc, that were previously using
+struct ucontext, to be fixed to use ucontext_t instead.  This is
+similar to the removal of the struct siginfo tag from siginfo_t some
+years ago.
+
+This patch changes those files to use ucontext_t instead.  As the
+standard name that should be unconditionally safe, so this is not
+restricted to architectures supported by glibc, or conditioned on the
+glibc version.
+
+Tested compilation together with current glibc with glibc's
+build-many-glibcs.py.
+
+	* config/aarch64/linux-unwind.h (aarch64_fallback_frame_state),
+	config/alpha/linux-unwind.h (alpha_fallback_frame_state),
+	config/bfin/linux-unwind.h (bfin_fallback_frame_state),
+	config/i386/linux-unwind.h (x86_64_fallback_frame_state,
+	x86_fallback_frame_state), config/m68k/linux-unwind.h (struct
+	uw_ucontext), config/nios2/linux-unwind.h (struct nios2_ucontext),
+	config/pa/linux-unwind.h (pa32_fallback_frame_state),
+	config/sh/linux-unwind.h (sh_fallback_frame_state),
+	config/tilepro/linux-unwind.h (tile_fallback_frame_state),
+	config/xtensa/linux-unwind.h (xtensa_fallback_frame_state): Use
+	ucontext_t instead of struct ucontext.
+
+git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-5-branch at 249958 138bc75d-0d04-0410-961f-82ee72b054a4
+
+(cherry picked from commit ecf0d1a107133c715763940c2b197aa814710e1b)
+[Romain rebase on 5.4]
+Signed-off-by: Romain Naour <[email protected]>
+---
+ libgcc/config/aarch64/linux-unwind.h | 2 +-
+ libgcc/config/alpha/linux-unwind.h   | 2 +-
+ libgcc/config/bfin/linux-unwind.h    | 2 +-
+ libgcc/config/i386/linux-unwind.h    | 4 ++--
+ libgcc/config/m68k/linux-unwind.h    | 2 +-
+ libgcc/config/nios2/linux-unwind.h   | 2 +-
+ libgcc/config/pa/linux-unwind.h      | 2 +-
+ libgcc/config/sh/linux-unwind.h      | 2 +-
+ libgcc/config/tilepro/linux-unwind.h | 2 +-
+ libgcc/config/xtensa/linux-unwind.h  | 2 +-
+ 10 files changed, 11 insertions(+), 11 deletions(-)
+
+diff --git a/libgcc/config/aarch64/linux-unwind.h b/libgcc/config/aarch64/linux-unwind.h
+index 86d17b1..909f68f 100644
+--- a/libgcc/config/aarch64/linux-unwind.h
++++ b/libgcc/config/aarch64/linux-unwind.h
+@@ -52,7 +52,7 @@ aarch64_fallback_frame_state (struct _Unwind_Context *context,
+   struct rt_sigframe
+   {
+     siginfo_t info;
+-    struct ucontext uc;
++    ucontext_t uc;
+   };
+ 
+   struct rt_sigframe *rt_;
+diff --git a/libgcc/config/alpha/linux-unwind.h b/libgcc/config/alpha/linux-unwind.h
+index d65474f..9a226b1 100644
+--- a/libgcc/config/alpha/linux-unwind.h
++++ b/libgcc/config/alpha/linux-unwind.h
+@@ -51,7 +51,7 @@ alpha_fallback_frame_state (struct _Unwind_Context *context,
+     {
+       struct rt_sigframe {
+ 	siginfo_t info;
+-	struct ucontext uc;
++	ucontext_t uc;
+       } *rt_ = context->cfa;
+       sc = &rt_->uc.uc_mcontext;
+     }
+diff --git a/libgcc/config/bfin/linux-unwind.h b/libgcc/config/bfin/linux-unwind.h
+index 0c270e4..7fa95d2 100644
+--- a/libgcc/config/bfin/linux-unwind.h
++++ b/libgcc/config/bfin/linux-unwind.h
+@@ -52,7 +52,7 @@ bfin_fallback_frame_state (struct _Unwind_Context *context,
+ 	void *puc;
+ 	char retcode[8];
+ 	siginfo_t info;
+-	struct ucontext uc;
++	ucontext_t uc;
+       } *rt_ = context->cfa;
+ 
+       /* The void * cast is necessary to avoid an aliasing warning.
+diff --git a/libgcc/config/i386/linux-unwind.h b/libgcc/config/i386/linux-unwind.h
+index e54bf73..d35fc45 100644
+--- a/libgcc/config/i386/linux-unwind.h
++++ b/libgcc/config/i386/linux-unwind.h
+@@ -58,7 +58,7 @@ x86_64_fallback_frame_state (struct _Unwind_Context *context,
+   if (*(unsigned char *)(pc+0) == 0x48
+       && *(unsigned long long *)(pc+1) == RT_SIGRETURN_SYSCALL)
+     {
+-      struct ucontext *uc_ = context->cfa;
++      ucontext_t *uc_ = context->cfa;
+       /* The void * cast is necessary to avoid an aliasing warning.
+          The aliasing warning is correct, but should not be a problem
+          because it does not alias anything.  */
+@@ -138,7 +138,7 @@ x86_fallback_frame_state (struct _Unwind_Context *context,
+ 	siginfo_t *pinfo;
+ 	void *puc;
+ 	siginfo_t info;
+-	struct ucontext uc;
++	ucontext_t uc;
+       } *rt_ = context->cfa;
+       /* The void * cast is necessary to avoid an aliasing warning.
+          The aliasing warning is correct, but should not be a problem
+diff --git a/libgcc/config/m68k/linux-unwind.h b/libgcc/config/m68k/linux-unwind.h
+index fb79a4d..b2f5ea4 100644
+--- a/libgcc/config/m68k/linux-unwind.h
++++ b/libgcc/config/m68k/linux-unwind.h
+@@ -33,7 +33,7 @@ see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+ /* <sys/ucontext.h> is unfortunately broken right now.  */
+ struct uw_ucontext {
+ 	unsigned long	  uc_flags;
+-	struct ucontext  *uc_link;
++	ucontext_t	 *uc_link;
+ 	stack_t		  uc_stack;
+ 	mcontext_t	  uc_mcontext;
+ 	unsigned long	  uc_filler[80];
+diff --git a/libgcc/config/nios2/linux-unwind.h b/libgcc/config/nios2/linux-unwind.h
+index dff1c20..1d88afe 100644
+--- a/libgcc/config/nios2/linux-unwind.h
++++ b/libgcc/config/nios2/linux-unwind.h
+@@ -38,7 +38,7 @@ struct nios2_mcontext {
+ 
+ struct nios2_ucontext {
+   unsigned long uc_flags;
+-  struct ucontext *uc_link;
++  ucontext_t *uc_link;
+   stack_t uc_stack;
+   struct nios2_mcontext uc_mcontext;
+   sigset_t uc_sigmask;	/* mask last for extensibility */
+diff --git a/libgcc/config/pa/linux-unwind.h b/libgcc/config/pa/linux-unwind.h
+index 0149468..9157535 100644
+--- a/libgcc/config/pa/linux-unwind.h
++++ b/libgcc/config/pa/linux-unwind.h
+@@ -80,7 +80,7 @@ pa32_fallback_frame_state (struct _Unwind_Context *context,
+   struct sigcontext *sc;
+   struct rt_sigframe {
+     siginfo_t info;
+-    struct ucontext uc;
++    ucontext_t uc;
+   } *frame;
+ 
+   /* rt_sigreturn trampoline:
+diff --git a/libgcc/config/sh/linux-unwind.h b/libgcc/config/sh/linux-unwind.h
+index e63091f..67033f0 100644
+--- a/libgcc/config/sh/linux-unwind.h
++++ b/libgcc/config/sh/linux-unwind.h
+@@ -180,7 +180,7 @@ sh_fallback_frame_state (struct _Unwind_Context *context,
+     {
+       struct rt_sigframe {
+ 	siginfo_t info;
+-	struct ucontext uc;
++	ucontext_t uc;
+       } *rt_ = context->cfa;
+       /* The void * cast is necessary to avoid an aliasing warning.
+          The aliasing warning is correct, but should not be a problem
+diff --git a/libgcc/config/tilepro/linux-unwind.h b/libgcc/config/tilepro/linux-unwind.h
+index fd83ba7..e3c9ef0 100644
+--- a/libgcc/config/tilepro/linux-unwind.h
++++ b/libgcc/config/tilepro/linux-unwind.h
+@@ -61,7 +61,7 @@ tile_fallback_frame_state (struct _Unwind_Context *context,
+   struct rt_sigframe {
+     unsigned char save_area[C_ABI_SAVE_AREA_SIZE];
+     siginfo_t info;
+-    struct ucontext uc;
++    ucontext_t uc;
+   } *rt_;
+ 
+   /* Return if this is not a signal handler.  */
+diff --git a/libgcc/config/xtensa/linux-unwind.h b/libgcc/config/xtensa/linux-unwind.h
+index 9daf738..ff6b663 100644
+--- a/libgcc/config/xtensa/linux-unwind.h
++++ b/libgcc/config/xtensa/linux-unwind.h
+@@ -64,7 +64,7 @@ xtensa_fallback_frame_state (struct _Unwind_Context *context,
+ 
+   struct rt_sigframe {
+     siginfo_t info;
+-    struct ucontext uc;
++    ucontext_t uc;
+   } *rt_;
+ 
+   /* movi a2, __NR_rt_sigreturn; syscall */
+-- 
+2.9.5
+

package/gcc/6.4.0/942-Use-ucontext_t-not-struct-ucontext-in-linux-unwind.h.patch new file +192 -0

new file mode 100644
index 0000000..a2a2ea0
@@ -0,0 +1,192 @@
+From 35d8ca22047f101a700abb29cffbf03b81278a2b Mon Sep 17 00:00:00 2001
+From: jsm28 <jsm28@138bc75d-0d04-0410-961f-82ee72b054a4>
+Date: Tue, 4 Jul 2017 10:23:57 +0000
+Subject: [PATCH] Use ucontext_t not struct ucontext in linux-unwind.h files.
+
+Current glibc no longer gives the ucontext_t type the tag struct
+ucontext, to conform with POSIX namespace rules.  This requires
+various linux-unwind.h files in libgcc, that were previously using
+struct ucontext, to be fixed to use ucontext_t instead.  This is
+similar to the removal of the struct siginfo tag from siginfo_t some
+years ago.
+
+This patch changes those files to use ucontext_t instead.  As the
+standard name that should be unconditionally safe, so this is not
+restricted to architectures supported by glibc, or conditioned on the
+glibc version.
+
+Tested compilation together with current glibc with glibc's
+build-many-glibcs.py.
+
+	* config/aarch64/linux-unwind.h (aarch64_fallback_frame_state),
+	config/alpha/linux-unwind.h (alpha_fallback_frame_state),
+	config/bfin/linux-unwind.h (bfin_fallback_frame_state),
+	config/i386/linux-unwind.h (x86_64_fallback_frame_state,
+	x86_fallback_frame_state), config/m68k/linux-unwind.h (struct
+	uw_ucontext), config/nios2/linux-unwind.h (struct nios2_ucontext),
+	config/pa/linux-unwind.h (pa32_fallback_frame_state),
+	config/sh/linux-unwind.h (sh_fallback_frame_state),
+	config/tilepro/linux-unwind.h (tile_fallback_frame_state),
+	config/xtensa/linux-unwind.h (xtensa_fallback_frame_state): Use
+	ucontext_t instead of struct ucontext.
+
+git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-6-branch at 249957 138bc75d-0d04-0410-961f-82ee72b054a4
+
+(cherry picked from commit b685411208e0aaa79190d54faf945763514706b8)
+[Romain rebase on gcc 6.4]
+Signed-off-by: Romain Naour <[email protected]>
+---
+ libgcc/config/aarch64/linux-unwind.h | 2 +-
+ libgcc/config/alpha/linux-unwind.h   | 2 +-
+ libgcc/config/bfin/linux-unwind.h    | 2 +-
+ libgcc/config/i386/linux-unwind.h    | 4 ++--
+ libgcc/config/m68k/linux-unwind.h    | 2 +-
+ libgcc/config/nios2/linux-unwind.h   | 2 +-
+ libgcc/config/pa/linux-unwind.h      | 2 +-
+ libgcc/config/sh/linux-unwind.h      | 2 +-
+ libgcc/config/tilepro/linux-unwind.h | 2 +-
+ libgcc/config/xtensa/linux-unwind.h  | 2 +-
+ 10 files changed, 11 insertions(+), 11 deletions(-)
+
+diff --git a/libgcc/config/aarch64/linux-unwind.h b/libgcc/config/aarch64/linux-unwind.h
+index 4512efb..06de45a 100644
+--- a/libgcc/config/aarch64/linux-unwind.h
++++ b/libgcc/config/aarch64/linux-unwind.h
+@@ -52,7 +52,7 @@ aarch64_fallback_frame_state (struct _Unwind_Context *context,
+   struct rt_sigframe
+   {
+     siginfo_t info;
+-    struct ucontext uc;
++    ucontext_t uc;
+   };
+ 
+   struct rt_sigframe *rt_;
+diff --git a/libgcc/config/alpha/linux-unwind.h b/libgcc/config/alpha/linux-unwind.h
+index bdbba4a..e84812e 100644
+--- a/libgcc/config/alpha/linux-unwind.h
++++ b/libgcc/config/alpha/linux-unwind.h
+@@ -51,7 +51,7 @@ alpha_fallback_frame_state (struct _Unwind_Context *context,
+     {
+       struct rt_sigframe {
+ 	siginfo_t info;
+-	struct ucontext uc;
++	ucontext_t uc;
+       } *rt_ = context->cfa;
+       sc = &rt_->uc.uc_mcontext;
+     }
+diff --git a/libgcc/config/bfin/linux-unwind.h b/libgcc/config/bfin/linux-unwind.h
+index 77b7c23..8bf5e82 100644
+--- a/libgcc/config/bfin/linux-unwind.h
++++ b/libgcc/config/bfin/linux-unwind.h
+@@ -52,7 +52,7 @@ bfin_fallback_frame_state (struct _Unwind_Context *context,
+ 	void *puc;
+ 	char retcode[8];
+ 	siginfo_t info;
+-	struct ucontext uc;
++	ucontext_t uc;
+       } *rt_ = context->cfa;
+ 
+       /* The void * cast is necessary to avoid an aliasing warning.
+diff --git a/libgcc/config/i386/linux-unwind.h b/libgcc/config/i386/linux-unwind.h
+index 540a0a2..29efbe3 100644
+--- a/libgcc/config/i386/linux-unwind.h
++++ b/libgcc/config/i386/linux-unwind.h
+@@ -58,7 +58,7 @@ x86_64_fallback_frame_state (struct _Unwind_Context *context,
+   if (*(unsigned char *)(pc+0) == 0x48
+       && *(unsigned long long *)(pc+1) == RT_SIGRETURN_SYSCALL)
+     {
+-      struct ucontext *uc_ = context->cfa;
++      ucontext_t *uc_ = context->cfa;
+       /* The void * cast is necessary to avoid an aliasing warning.
+          The aliasing warning is correct, but should not be a problem
+          because it does not alias anything.  */
+@@ -138,7 +138,7 @@ x86_fallback_frame_state (struct _Unwind_Context *context,
+ 	siginfo_t *pinfo;
+ 	void *puc;
+ 	siginfo_t info;
+-	struct ucontext uc;
++	ucontext_t uc;
+       } *rt_ = context->cfa;
+       /* The void * cast is necessary to avoid an aliasing warning.
+          The aliasing warning is correct, but should not be a problem
+diff --git a/libgcc/config/m68k/linux-unwind.h b/libgcc/config/m68k/linux-unwind.h
+index 75b7cf7..f964e24 100644
+--- a/libgcc/config/m68k/linux-unwind.h
++++ b/libgcc/config/m68k/linux-unwind.h
+@@ -33,7 +33,7 @@ see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+ /* <sys/ucontext.h> is unfortunately broken right now.  */
+ struct uw_ucontext {
+ 	unsigned long	  uc_flags;
+-	struct ucontext  *uc_link;
++	ucontext_t	 *uc_link;
+ 	stack_t		  uc_stack;
+ 	mcontext_t	  uc_mcontext;
+ 	unsigned long	  uc_filler[80];
+diff --git a/libgcc/config/nios2/linux-unwind.h b/libgcc/config/nios2/linux-unwind.h
+index 2304142..30f25ea 100644
+--- a/libgcc/config/nios2/linux-unwind.h
++++ b/libgcc/config/nios2/linux-unwind.h
+@@ -38,7 +38,7 @@ struct nios2_mcontext {
+ 
+ struct nios2_ucontext {
+   unsigned long uc_flags;
+-  struct ucontext *uc_link;
++  ucontext_t *uc_link;
+   stack_t uc_stack;
+   struct nios2_mcontext uc_mcontext;
+   sigset_t uc_sigmask;	/* mask last for extensibility */
+diff --git a/libgcc/config/pa/linux-unwind.h b/libgcc/config/pa/linux-unwind.h
+index 9a2657f..e47493d 100644
+--- a/libgcc/config/pa/linux-unwind.h
++++ b/libgcc/config/pa/linux-unwind.h
+@@ -80,7 +80,7 @@ pa32_fallback_frame_state (struct _Unwind_Context *context,
+   struct sigcontext *sc;
+   struct rt_sigframe {
+     siginfo_t info;
+-    struct ucontext uc;
++    ucontext_t uc;
+   } *frame;
+ 
+   /* rt_sigreturn trampoline:
+diff --git a/libgcc/config/sh/linux-unwind.h b/libgcc/config/sh/linux-unwind.h
+index e389cac..0bf43ba 100644
+--- a/libgcc/config/sh/linux-unwind.h
++++ b/libgcc/config/sh/linux-unwind.h
+@@ -180,7 +180,7 @@ sh_fallback_frame_state (struct _Unwind_Context *context,
+     {
+       struct rt_sigframe {
+ 	siginfo_t info;
+-	struct ucontext uc;
++	ucontext_t uc;
+       } *rt_ = context->cfa;
+       /* The void * cast is necessary to avoid an aliasing warning.
+          The aliasing warning is correct, but should not be a problem
+diff --git a/libgcc/config/tilepro/linux-unwind.h b/libgcc/config/tilepro/linux-unwind.h
+index 796e976..75f8890 100644
+--- a/libgcc/config/tilepro/linux-unwind.h
++++ b/libgcc/config/tilepro/linux-unwind.h
+@@ -61,7 +61,7 @@ tile_fallback_frame_state (struct _Unwind_Context *context,
+   struct rt_sigframe {
+     unsigned char save_area[C_ABI_SAVE_AREA_SIZE];
+     siginfo_t info;
+-    struct ucontext uc;
++    ucontext_t uc;
+   } *rt_;
+ 
+   /* Return if this is not a signal handler.  */
+diff --git a/libgcc/config/xtensa/linux-unwind.h b/libgcc/config/xtensa/linux-unwind.h
+index 9872492..586a9d4 100644
+--- a/libgcc/config/xtensa/linux-unwind.h
++++ b/libgcc/config/xtensa/linux-unwind.h
+@@ -67,7 +67,7 @@ xtensa_fallback_frame_state (struct _Unwind_Context *context,
+ 
+   struct rt_sigframe {
+     siginfo_t info;
+-    struct ucontext uc;
++    ucontext_t uc;
+   } *rt_;
+ 
+   /* movi a2, __NR_rt_sigreturn; syscall */
+-- 
+2.9.5
+

Signature · 1 line

2.9.5

../../../../libsanitizer/sanitizer_common/sanitizer_stoptheworld_linux_libcdep.cc: In function ?int __sanitizer::TracerThread(void*)?:
../../../../libsanitizer/sanitizer_common/sanitizer_stoptheworld_linux_libcdep.cc:241:22: error: aggregate ?sigaltstack handler_stack? has incomplete type and cannot be defined
struct sigaltstack handler_stack;

../../../../libsanitizer/sanitizer_common/sanitizer_stoptheworld_linux_libcdep.cc: In function ?int __sanitizer::TracerThread(void*)?:
../../../../libsanitizer/sanitizer_common/sanitizer_stoptheworld_linux_libcdep.cc:276:22: error: aggregate ?sigaltstack handler_stack? has incomplete type and cannot be defined

   struct sigaltstack handler_stack;
                      ^~~~~~~~~~~~~

The fix is already included in gcc 7.2 release [1]. We have to backport it to all older gcc release since it's not included in any stable release yet.

[1] https://gcc.gnu.org/git/?p=gcc.git;a=commit;h=72edc2c02f8b4768ad660f46a1c7e2400c0a8e06

Signed-off-by Romain Naour <[email protected]>

Cc Thomas Petazzoni <[email protected]>

Cc "Yann E. MORIN" <[email protected]>

---
v3: use upstream commit for gcc 5 and 6. (Yann)

---
 package/gcc/4.9.4/944-sanitizer-linux.patch | 88 ++++++++++++++++++++++++++++
 package/gcc/5.4.0/944-sanitizer-linux.patch | 91 +++++++++++++++++++++++++++++
 package/gcc/6.4.0/943-sanitizer-linux.patch | 91 +++++++++++++++++++++++++++++
 3 files changed, 270 insertions(+)
 create mode 100644 package/gcc/4.9.4/944-sanitizer-linux.patch
 create mode 100644 package/gcc/5.4.0/944-sanitizer-linux.patch
 create mode 100644 package/gcc/6.4.0/943-sanitizer-linux.patch

package/gcc/4.9.4/944-sanitizer-linux.patch new file +88 -0

new file mode 100644
index 0000000..caadf2d
@@ -0,0 +1,88 @@
+From f9a35ba5c150da2e381c4cab01f8f12bcd6af5d2 Mon Sep 17 00:00:00 2001
+From: jakub <jakub@138bc75d-0d04-0410-961f-82ee72b054a4>
+Date: Mon, 17 Jul 2017 19:41:08 +0000
+Subject: [PATCH] 	Backported from mainline 	2017-07-14  Jakub
+ Jelinek  <[email protected]>
+
+	PR sanitizer/81066
+	* sanitizer_common/sanitizer_linux.h: Cherry-pick upstream r307969.
+	* sanitizer_common/sanitizer_linux.cc: Likewise.
+	* sanitizer_common/sanitizer_stoptheworld_linux_libcdep.cc: Likewise.
+	* tsan/tsan_platform_linux.cc: Likewise.
+
+git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-7-branch at 250287 138bc75d-0d04-0410-961f-82ee72b054a4
+(cherry picked from commit 72edc2c02f8b4768ad660f46a1c7e2400c0a8e06)
+[Romain backport to 4.9.4]
+Signed-off-by: Romain Naour <[email protected]>
+---
+ libsanitizer/sanitizer_common/sanitizer_linux.cc                      | 3 +--
+ libsanitizer/sanitizer_common/sanitizer_linux.h                       | 4 +---
+ libsanitizer/sanitizer_common/sanitizer_stoptheworld_linux_libcdep.cc | 2 +-
+ libsanitizer/tsan/tsan_platform_linux.cc                              | 2 +-
+ 4 files changed, 4 insertions(+), 7 deletions(-)
+
+diff --git a/libsanitizer/sanitizer_common/sanitizer_linux.cc b/libsanitizer/sanitizer_common/sanitizer_linux.cc
+index 69c9c10..8e53673 100644
+--- a/libsanitizer/sanitizer_common/sanitizer_linux.cc
++++ b/libsanitizer/sanitizer_common/sanitizer_linux.cc
+@@ -599,8 +599,7 @@ uptr internal_prctl(int option, uptr arg2, uptr arg3, uptr arg4, uptr arg5) {
+   return internal_syscall(__NR_prctl, option, arg2, arg3, arg4, arg5);
+ }
+ 
+-uptr internal_sigaltstack(const struct sigaltstack *ss,
+-                         struct sigaltstack *oss) {
++uptr internal_sigaltstack(const void *ss, void *oss) {
+   return internal_syscall(__NR_sigaltstack, (uptr)ss, (uptr)oss);
+ }
+ 
+diff --git a/libsanitizer/sanitizer_common/sanitizer_linux.h b/libsanitizer/sanitizer_common/sanitizer_linux.h
+index 6422df1..8e111d1 100644
+--- a/libsanitizer/sanitizer_common/sanitizer_linux.h
++++ b/libsanitizer/sanitizer_common/sanitizer_linux.h
+@@ -18,7 +18,6 @@
+ #include "sanitizer_platform_limits_posix.h"
+ 
+ struct link_map;  // Opaque type returned by dlopen().
+-struct sigaltstack;
+ 
+ namespace __sanitizer {
+ // Dirent structure for getdents(). Note that this structure is different from
+@@ -28,8 +27,7 @@ struct linux_dirent;
+ // Syscall wrappers.
+ uptr internal_getdents(fd_t fd, struct linux_dirent *dirp, unsigned int count);
+ uptr internal_prctl(int option, uptr arg2, uptr arg3, uptr arg4, uptr arg5);
+-uptr internal_sigaltstack(const struct sigaltstack* ss,
+-                          struct sigaltstack* oss);
++uptr internal_sigaltstack(const void* ss, void* oss);
+ uptr internal_sigaction(int signum, const __sanitizer_kernel_sigaction_t *act,
+     __sanitizer_kernel_sigaction_t *oldact);
+ uptr internal_sigprocmask(int how, __sanitizer_kernel_sigset_t *set,
+diff --git a/libsanitizer/sanitizer_common/sanitizer_stoptheworld_linux_libcdep.cc b/libsanitizer/sanitizer_common/sanitizer_stoptheworld_linux_libcdep.cc
+index 6ee63ec..50c21a3 100644
+--- a/libsanitizer/sanitizer_common/sanitizer_stoptheworld_linux_libcdep.cc
++++ b/libsanitizer/sanitizer_common/sanitizer_stoptheworld_linux_libcdep.cc
+@@ -238,7 +238,7 @@ static int TracerThread(void* argument) {
+ 
+   // Alternate stack for signal handling.
+   InternalScopedBuffer<char> handler_stack_memory(kHandlerStackSize);
+-  struct sigaltstack handler_stack;
++  stack_t handler_stack;
+   internal_memset(&handler_stack, 0, sizeof(handler_stack));
+   handler_stack.ss_sp = handler_stack_memory.data();
+   handler_stack.ss_size = kHandlerStackSize;
+diff --git a/libsanitizer/tsan/tsan_platform_linux.cc b/libsanitizer/tsan/tsan_platform_linux.cc
+index fe69430..49f5270 100644
+--- a/libsanitizer/tsan/tsan_platform_linux.cc
++++ b/libsanitizer/tsan/tsan_platform_linux.cc
+@@ -351,7 +351,7 @@ bool IsGlobalVar(uptr addr) {
+ // closes within glibc. The code is a pure hack.
+ int ExtractResolvFDs(void *state, int *fds, int nfd) {
+   int cnt = 0;
+-  __res_state *statp = (__res_state*)state;
++  struct __res_state *statp = (struct __res_state*)state;
+   for (int i = 0; i < MAXNS && cnt < nfd; i++) {
+     if (statp->_u._ext.nsaddrs[i] && statp->_u._ext.nssocks[i] != -1)
+       fds[cnt++] = statp->_u._ext.nssocks[i];
+-- 
+2.9.5
+

package/gcc/5.4.0/944-sanitizer-linux.patch new file +91 -0

new file mode 100644
index 0000000..a2602b7
@@ -0,0 +1,91 @@
+From cf796eadff0f2ff0f6e4565373d54d10dff276e1 Mon Sep 17 00:00:00 2001
+From: doko <doko@138bc75d-0d04-0410-961f-82ee72b054a4>
+Date: Thu, 7 Sep 2017 07:17:17 +0000
+Subject: [PATCH] 2017-09-07  Matthias Klose  <[email protected]>
+
+        Backported from mainline
+        2017-07-14  Jakub Jelinek  <[email protected]>
+
+        PR sanitizer/81066
+        * sanitizer_common/sanitizer_linux.h: Cherry-pick upstream r307969.
+        * sanitizer_common/sanitizer_linux.cc: Likewise.
+        * sanitizer_common/sanitizer_stoptheworld_linux_libcdep.cc: Likewise.
+        * tsan/tsan_platform_linux.cc: Likewise.
+
+git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-5-branch at 251829 138bc75d-0d04-0410-961f-82ee72b054a4
+
+(cherry picked from commit 833e00c01e96f61e24cd7ec97b93fad212dc914b)
+[Romain rebase on gcc 5.4]
+Signed-off-by: Romain Naour <[email protected]>
+---
+ libsanitizer/sanitizer_common/sanitizer_linux.cc                      | 3 +--
+ libsanitizer/sanitizer_common/sanitizer_linux.h                       | 4 +---
+ libsanitizer/sanitizer_common/sanitizer_stoptheworld_linux_libcdep.cc | 2 +-
+ libsanitizer/tsan/tsan_platform_linux.cc                              | 2 +-
+ 4 files changed, 4 insertions(+), 7 deletions(-)
+
+diff --git a/libsanitizer/sanitizer_common/sanitizer_linux.cc b/libsanitizer/sanitizer_common/sanitizer_linux.cc
+index 9feb307..821b26d 100644
+--- a/libsanitizer/sanitizer_common/sanitizer_linux.cc
++++ b/libsanitizer/sanitizer_common/sanitizer_linux.cc
+@@ -514,8 +514,7 @@ uptr internal_prctl(int option, uptr arg2, uptr arg3, uptr arg4, uptr arg5) {
+ }
+ #endif
+ 
+-uptr internal_sigaltstack(const struct sigaltstack *ss,
+-                         struct sigaltstack *oss) {
++uptr internal_sigaltstack(const void *ss, void *oss) {
+   return internal_syscall(SYSCALL(sigaltstack), (uptr)ss, (uptr)oss);
+ }
+ 
+diff --git a/libsanitizer/sanitizer_common/sanitizer_linux.h b/libsanitizer/sanitizer_common/sanitizer_linux.h
+index 086834c..3a6f4cd 100644
+--- a/libsanitizer/sanitizer_common/sanitizer_linux.h
++++ b/libsanitizer/sanitizer_common/sanitizer_linux.h
+@@ -18,7 +18,6 @@
+ #include "sanitizer_platform_limits_posix.h"
+ 
+ struct link_map;  // Opaque type returned by dlopen().
+-struct sigaltstack;
+ 
+ namespace __sanitizer {
+ // Dirent structure for getdents(). Note that this structure is different from
+@@ -27,8 +26,7 @@ struct linux_dirent;
+ 
+ // Syscall wrappers.
+ uptr internal_getdents(fd_t fd, struct linux_dirent *dirp, unsigned int count);
+-uptr internal_sigaltstack(const struct sigaltstack* ss,
+-                          struct sigaltstack* oss);
++uptr internal_sigaltstack(const void* ss, void* oss);
+ uptr internal_sigprocmask(int how, __sanitizer_sigset_t *set,
+     __sanitizer_sigset_t *oldset);
+ void internal_sigfillset(__sanitizer_sigset_t *set);
+diff --git a/libsanitizer/sanitizer_common/sanitizer_stoptheworld_linux_libcdep.cc b/libsanitizer/sanitizer_common/sanitizer_stoptheworld_linux_libcdep.cc
+index 5881202..c54894d 100644
+--- a/libsanitizer/sanitizer_common/sanitizer_stoptheworld_linux_libcdep.cc
++++ b/libsanitizer/sanitizer_common/sanitizer_stoptheworld_linux_libcdep.cc
+@@ -234,7 +234,7 @@ static int TracerThread(void* argument) {
+ 
+   // Alternate stack for signal handling.
+   InternalScopedBuffer<char> handler_stack_memory(kHandlerStackSize);
+-  struct sigaltstack handler_stack;
++  stack_t handler_stack;
+   internal_memset(&handler_stack, 0, sizeof(handler_stack));
+   handler_stack.ss_sp = handler_stack_memory.data();
+   handler_stack.ss_size = kHandlerStackSize;
+diff --git a/libsanitizer/tsan/tsan_platform_linux.cc b/libsanitizer/tsan/tsan_platform_linux.cc
+index 3259131..b8e9078 100644
+--- a/libsanitizer/tsan/tsan_platform_linux.cc
++++ b/libsanitizer/tsan/tsan_platform_linux.cc
+@@ -377,7 +377,7 @@ bool IsGlobalVar(uptr addr) {
+ int ExtractResolvFDs(void *state, int *fds, int nfd) {
+ #if SANITIZER_LINUX
+   int cnt = 0;
+-  __res_state *statp = (__res_state*)state;
++  struct __res_state *statp = (struct __res_state*)state;
+   for (int i = 0; i < MAXNS && cnt < nfd; i++) {
+     if (statp->_u._ext.nsaddrs[i] && statp->_u._ext.nssocks[i] != -1)
+       fds[cnt++] = statp->_u._ext.nssocks[i];
+-- 
+2.9.5
+

package/gcc/6.4.0/943-sanitizer-linux.patch new file +91 -0

new file mode 100644
index 0000000..640d68c
@@ -0,0 +1,91 @@
+From a3e3d1b5f73380a99126c4937a95225ba3bd214b Mon Sep 17 00:00:00 2001
+From: doko <doko@138bc75d-0d04-0410-961f-82ee72b054a4>
+Date: Thu, 7 Sep 2017 07:15:24 +0000
+Subject: [PATCH] 2017-09-07  Matthias Klose  <[email protected]>
+
+        Backported from mainline
+        2017-07-14  Jakub Jelinek  <[email protected]>
+
+        PR sanitizer/81066
+        * sanitizer_common/sanitizer_linux.h: Cherry-pick upstream r307969.
+        * sanitizer_common/sanitizer_linux.cc: Likewise.
+        * sanitizer_common/sanitizer_stoptheworld_linux_libcdep.cc: Likewise.
+        * tsan/tsan_platform_linux.cc: Likewise.
+
+git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-6-branch at 251828 138bc75d-0d04-0410-961f-82ee72b054a4
+
+(cherry picked from commit 8937b94d1a643fd9760714642296d034a45254a8)
+[Romain rebase on gcc 6.4]
+Signed-off-by: Romain Naour <[email protected]>
+---
+ libsanitizer/sanitizer_common/sanitizer_linux.cc                      | 3 +--
+ libsanitizer/sanitizer_common/sanitizer_linux.h                       | 4 +---
+ libsanitizer/sanitizer_common/sanitizer_stoptheworld_linux_libcdep.cc | 2 +-
+ libsanitizer/tsan/tsan_platform_linux.cc                              | 2 +-
+ 4 files changed, 4 insertions(+), 7 deletions(-)
+
+diff --git a/libsanitizer/sanitizer_common/sanitizer_linux.cc b/libsanitizer/sanitizer_common/sanitizer_linux.cc
+index 2cefa20..223d9c6 100644
+--- a/libsanitizer/sanitizer_common/sanitizer_linux.cc
++++ b/libsanitizer/sanitizer_common/sanitizer_linux.cc
+@@ -546,8 +546,7 @@ uptr internal_prctl(int option, uptr arg2, uptr arg3, uptr arg4, uptr arg5) {
+ }
+ #endif
+ 
+-uptr internal_sigaltstack(const struct sigaltstack *ss,
+-                         struct sigaltstack *oss) {
++uptr internal_sigaltstack(const void *ss, void *oss) {
+   return internal_syscall(SYSCALL(sigaltstack), (uptr)ss, (uptr)oss);
+ }
+ 
+diff --git a/libsanitizer/sanitizer_common/sanitizer_linux.h b/libsanitizer/sanitizer_common/sanitizer_linux.h
+index 4497702..1594058 100644
+--- a/libsanitizer/sanitizer_common/sanitizer_linux.h
++++ b/libsanitizer/sanitizer_common/sanitizer_linux.h
+@@ -19,7 +19,6 @@
+ #include "sanitizer_platform_limits_posix.h"
+ 
+ struct link_map;  // Opaque type returned by dlopen().
+-struct sigaltstack;
+ 
+ namespace __sanitizer {
+ // Dirent structure for getdents(). Note that this structure is different from
+@@ -28,8 +27,7 @@ struct linux_dirent;
+ 
+ // Syscall wrappers.
+ uptr internal_getdents(fd_t fd, struct linux_dirent *dirp, unsigned int count);
+-uptr internal_sigaltstack(const struct sigaltstack* ss,
+-                          struct sigaltstack* oss);
++uptr internal_sigaltstack(const void* ss, void* oss);
+ uptr internal_sigprocmask(int how, __sanitizer_sigset_t *set,
+     __sanitizer_sigset_t *oldset);
+ void internal_sigfillset(__sanitizer_sigset_t *set);
+diff --git a/libsanitizer/sanitizer_common/sanitizer_stoptheworld_linux_libcdep.cc b/libsanitizer/sanitizer_common/sanitizer_stoptheworld_linux_libcdep.cc
+index c919e4f..014162af 100644
+--- a/libsanitizer/sanitizer_common/sanitizer_stoptheworld_linux_libcdep.cc
++++ b/libsanitizer/sanitizer_common/sanitizer_stoptheworld_linux_libcdep.cc
+@@ -267,7 +267,7 @@ static int TracerThread(void* argument) {
+ 
+   // Alternate stack for signal handling.
+   InternalScopedBuffer<char> handler_stack_memory(kHandlerStackSize);
+-  struct sigaltstack handler_stack;
++  stack_t handler_stack;
+   internal_memset(&handler_stack, 0, sizeof(handler_stack));
+   handler_stack.ss_sp = handler_stack_memory.data();
+   handler_stack.ss_size = kHandlerStackSize;
+diff --git a/libsanitizer/tsan/tsan_platform_linux.cc b/libsanitizer/tsan/tsan_platform_linux.cc
+index 09cec5f..908f4fe 100644
+--- a/libsanitizer/tsan/tsan_platform_linux.cc
++++ b/libsanitizer/tsan/tsan_platform_linux.cc
+@@ -291,7 +291,7 @@ bool IsGlobalVar(uptr addr) {
+ int ExtractResolvFDs(void *state, int *fds, int nfd) {
+ #if SANITIZER_LINUX
+   int cnt = 0;
+-  __res_state *statp = (__res_state*)state;
++  struct __res_state *statp = (struct __res_state*)state;
+   for (int i = 0; i < MAXNS && cnt < nfd; i++) {
+     if (statp->_u._ext.nsaddrs[i] && statp->_u._ext.nssocks[i] != -1)
+       fds[cnt++] = statp->_u._ext.nssocks[i];
+-- 
+2.9.5
+

Signature · 1 line

2.9.5

Since glibc 2.26, kernel headers >= 3.10 are needed on powerpc64le [1]. In order to prepare the glibc bump to this version, we don't allow to build a Buildroot toolchain with kernel headers older than 3.10.

[1] https://sourceware.org/git/?p=glibc.git;a=commit;h=c2ff5ec13fca1bdd1cd646a0260808386d7bd7ff

Signed-off-by Romain Naour <[email protected]>

Cc Thomas Petazzoni <[email protected]>

Cc "Yann E. MORIN" <[email protected]>

---
v3: move the dependency outside of architectures section. (Yann)

---
 toolchain/toolchain-buildroot/Config.in | 6 ++++++
 1 file changed, 6 insertions(+)

toolchain/toolchain-buildroot/Config.in +6 -0

index f47001f..ac6017f 100644
@@ -51,6 +51,7 @@ config BR2_TOOLCHAIN_BUILDROOT_GLIBC
 	depends on BR2_USE_MMU
 	depends on !BR2_STATIC_LIBS
 	depends on BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_2
+	depends on BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_10 || !BR2_powerpc64le
 	depends on !BR2_powerpc_SPE
 	select BR2_TOOLCHAIN_USES_GLIBC
 	# our glibc.mk enables RPC support

@@ -65,6 +66,11 @@ comment "glibc needs a toolchain w/ dynamic library, kernel headers >= 3.2"
 	depends on BR2_USE_MMU
 	depends on BR2_STATIC_LIBS || !BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_2
 
+# glibc >= 2.26 require kernel headers >= 3.10 on powerpc64le.
+comment "glibc on powerpc64le needs a toolchain w/ headers >= 3.10"
+	depends on BR2_powerpc64le
+	depends on !BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_10
+
 config BR2_TOOLCHAIN_BUILDROOT_MUSL
 	bool "musl"
 	depends on BR2_aarch64	  || BR2_arm     || BR2_armeb     || BR2_i386 || \

Signature · 1 line

2.9.5

float128 is now required on powerpc64le with glibc >= 2.26 toolchains.

Fixes:
running configure fragment for sysdeps/gnu
running configure fragment for sysdeps/powerpc/powerpc64le
checking if [...]powerpc64le-buildroot-linux-gnu-gcc supports binary128 floating point type... no checking if the target machine is at least POWER8... yes
configure: error: *** binary128 floating point type (GCC >= 6.2) is required on powerpc64le.

In order to prepare the glibc bump to this version, we enable binary128 floating point in gcc. This require at least gcc >= 6.2.

Disable gcc 4.x and 5.x for internal toolchain.

Signed-off-by Romain Naour <[email protected]>

---
v2: Disable gcc 4.x and 5.x for internal toolchain.

---
 package/gcc/Config.in.host | 4 ++++
 package/gcc/gcc.mk         | 8 ++++++++
 2 files changed, 12 insertions(+)

package/gcc/Config.in.host +4 -0

index ec7b692..0926560 100644
@@ -39,6 +39,8 @@ config BR2_GCC_VERSION_4_9_X
 	depends on !(BR2_TOOLCHAIN_USES_MUSL && (BR2_powerpc64 || BR2_powerpc64le))
 	# musl mips64 unsupported
 	depends on !(BR2_TOOLCHAIN_USES_MUSL && (BR2_mips64 || BR2_mips64el))
+	# glibc >= 2.26 needs gcc >= 6.2
+	depends on !(BR2_TOOLCHAIN_USES_GLIBC && BR2_powerpc64le)
 	select BR2_TOOLCHAIN_GCC_AT_LEAST_4_9
 
 config BR2_GCC_VERSION_5_X

@@ -53,6 +55,8 @@ config BR2_GCC_VERSION_5_X
 	depends on !BR2_mips_interaptiv && !BR2_mips_m5150 && !BR2_mips_i6400
 	# musl mips64 unsupported
 	depends on !(BR2_TOOLCHAIN_USES_MUSL && (BR2_mips64 || BR2_mips64el))
+	# glibc >= 2.26 needs gcc >= 6.2
+	depends on !(BR2_TOOLCHAIN_USES_GLIBC && BR2_powerpc64le)
 	select BR2_TOOLCHAIN_GCC_AT_LEAST_5
 
 config BR2_GCC_VERSION_6_X

package/gcc/gcc.mk +0 -0

index 49ccccf..54ef70c 100644

package/gcc/gcc.mk +2 -0

+endif
+
 HOST_GCC_COMMON_TOOLCHAIN_WRAPPER_ARGS += -DBR_CROSS_PATH_SUFFIX='".br_real"'
 ifeq ($(BR2_GCC_ARCH_HAS_CONFIGURABLE_DEFAULTS),)
 ifeq ($(call qstrip,$(BR2_GCC_TARGET_CPU_REVISION)),)

Signature · 6 lines

2.9.5

_______________________________________________
buildroot mailing list
buildroot at busybox.net
http://lists.busybox.net/mailman/listinfo/buildroot

Romain, All,

On 2017-09-23 23:24 +0200, Romain Naour spake thusly:

Quoted 4 lines

package/gcc/gcc.mk +0 -0

@@ -254,6 +254,14 @@ HOST_GCC_COMMON_CONF_OPTS += \
 	--without-long-double-128
 endif
 

package/gcc/gcc.mk HOST_GCC_COMMON_CONF_OPTS += \ · line 262

Quoted 6 lines

package/gcc/gcc.mk +6 -0

+# Since glibc >= 2.26, poerpc64le requires double/long double which
+# requires at least gcc 6.2.
+# See sysdeps/powerpc/powerpc64le/configure.ac
+ifeq ($(BR2_TOOLCHAIN_USES_GLIBC)$(BR2_TOOLCHAIN_GCC_AT_LEAST_6)$(BR2_powerpc64le),yyy)
+HOST_GCC_COMMON_CONF_OPTS += \
+	--with-long-double-128

Could very well have been on a single line.

Since glibc >= 2.26, don't try to use getopt_long replacement bundled with diffutils. It will conflict with the one from glibc.
The getopt copy bundled in glibc has been updated with the one from gnulib.

After a lot of warnings...
Fixes:
xstrtol-error.c: In function 'xstrtol_error':
xstrtol-error.c:84:26: error: invalid use of undefined type 'struct rpl_option'

     option = long_options[opt_idx].name;
                          ^

xstrtol-error.c:84:26: error: dereferencing pointer to incomplete type 'const struct rpl_option'

[...]

xstrtol-error.c:92:1: error: conflicting types for 'xstrtol_fatal'
xstrtol_fatal (enum strtol_error err,
^~~~~~~~~~~~~
In file included from xstrtol-error.c:20:0:
xstrtol.h:69:16: note: previous declaration of 'xstrtol_fatal' was here
_Noreturn void xstrtol_fatal (enum strtol_error,

                ^~~~~~~~~~~~~

Signed-off-by Romain Naour <[email protected]>

---
 package/diffutils/diffutils.mk | 6 ++++++
 1 file changed, 6 insertions(+)

package/diffutils/diffutils.mk +6 -0

index 6e5b9b6..79785d6 100644
@@ -11,6 +11,12 @@ DIFFUTILS_DEPENDENCIES = $(TARGET_NLS_DEPENDENCIES)
 DIFFUTILS_LICENSE = GPL-3.0+
 DIFFUTILS_LICENSE_FILES = COPYING
 
+# Since glibc >= 2.26, don't try to use getopt_long replacement bundled
+# with diffutils. It will conflict with the one from glibc.
+ifeq ($(BR2_TOOLCHAIN_USES_GLIBC),y)
+DIFFUTILS_CONF_ENV += gl_cv_func_getopt_gnu=yes
+endif
+
 ifeq ($(BR2_PACKAGE_BUSYBOX),y)
 DIFFUTILS_DEPENDENCIES += busybox
 endif

Signature · 6 lines

2.9.5

_______________________________________________
buildroot mailing list
buildroot at busybox.net
http://lists.busybox.net/mailman/listinfo/buildroot

This doesn't compile with glibc 2.26 where reallocarray() as been introduced.

It's a nasty issue, when reallocarray() is available for the target, flex will build a small tool called stage1flex for the host (using _FOR_BUILD) but with the config.h generated for the target.

When the host doesn't have a glibc >= 2.26, reallocarray() is never defined while building stage1flex:

misc.c:147:8: warning : implicit declaration of function ? reallocarray ? [-Wimplicit-function-declaration]

  mem = reallocarray(NULL, (size_t) size, element_size);
        ^~~~~~~~~~~~
misc.c:147:6: warning : assignment makes pointer from integer without a cast
[-Wint-conversion]
  mem = reallocarray(NULL, (size_t) size, element_size);
      ^

Disable reallocarray for now, reallocarray() support may be enabled in a followup patch.

Fixes:
stage1flex-misc.o: In function `allocate_array':
misc.c:(.text+0x38f): undefined reference to reallocarray' stage1flex-misc.o: In function reallocate_array':
misc.c:(.text+0xc8a): undefined reference to `reallocarray'
collect2: error: ld returned 1 exit status

Signed-off-by Romain Naour <[email protected]>

---
 package/flex/flex.mk | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

package/flex/flex.mk +2 -1

index b782699..0196624 100644
@@ -10,7 +10,8 @@ FLEX_INSTALL_STAGING = YES
 FLEX_LICENSE = FLEX
 FLEX_LICENSE_FILES = COPYING
 FLEX_DEPENDENCIES = $(TARGET_NLS_DEPENDENCIES) host-m4
-FLEX_CONF_ENV = ac_cv_path_M4=/usr/bin/m4
+FLEX_CONF_ENV = ac_cv_path_M4=/usr/bin/m4 \
+	ac_cv_func_reallocarray=no
 HOST_FLEX_DEPENDENCIES = host-m4
 
 define FLEX_DISABLE_PROGRAM

Signature · 6 lines

2.9.5

_______________________________________________
buildroot mailing list
buildroot at busybox.net
http://lists.busybox.net/mailman/listinfo/buildroot

Romain, All,

On 2017-09-23 23:24 +0200, Romain Naour spake thusly:

Quoted 18 lines

This doesn't compile with glibc 2.26 where reallocarray() as been introduced.

It's a nasty issue, when reallocarray() is available for the target, flex will build a small tool called stage1flex for the host (using _FOR_BUILD) but with the config.h generated for the target.

When the host doesn't have a glibc >= 2.26, reallocarray() is never defined while building stage1flex:

misc.c:147:8: warning : implicit declaration of function ? reallocarray ? [-Wimplicit-function-declaration]

  mem = reallocarray(NULL, (size_t) size, element_size);
        ^~~~~~~~~~~~
misc.c:147:6: warning : assignment makes pointer from integer without a cast
[-Wint-conversion]
  mem = reallocarray(NULL, (size_t) size, element_size);
      ^

Quoted 2 lines

Disable reallocarray for now, reallocarray() support may be enabled in a followup patch.

What about https://patchwork.ozlabs.org/patch/813474/ which just backports a fix from upstream (or I'm mislead)?

Regards,
Yann E. MORIN.

Quoted 33 lines

Fixes:
stage1flex-misc.o: In function `allocate_array':
misc.c:(.text+0x38f): undefined reference to reallocarray' stage1flex-misc.o: In function reallocate_array':
misc.c:(.text+0xc8a): undefined reference to `reallocarray'
collect2: error: ld returned 1 exit status

Signed-off-by Romain Naour <[email protected]>

---
 package/flex/flex.mk | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

package/flex/flex.mk +2 -1

index b782699..0196624 100644
@@ -10,7 +10,8 @@ FLEX_INSTALL_STAGING = YES
 FLEX_LICENSE = FLEX
 FLEX_LICENSE_FILES = COPYING
 FLEX_DEPENDENCIES = $(TARGET_NLS_DEPENDENCIES) host-m4
-FLEX_CONF_ENV = ac_cv_path_M4=/usr/bin/m4
+FLEX_CONF_ENV = ac_cv_path_M4=/usr/bin/m4 \
+	ac_cv_func_reallocarray=no
 HOST_FLEX_DEPENDENCIES = host-m4
 
 define FLEX_DISABLE_PROGRAM

Signature · 6 lines

2.9.5

_______________________________________________
buildroot mailing list
buildroot at busybox.net
http://lists.busybox.net/mailman/listinfo/buildroot

This series bump glibc to the latest release and allow to remove all patches required for the previous version! But glibc come with some new issue that are hopefully already fixed in the 2.26.x stable branch.

While testing this new version, some build issues has been dicovered. Two gcc patch are needed to build a toolchain with older compiler (gcc 4.9 to 6.4), gcc 7.2 contain already the fix.

Backport a series related to bug 21930 and 22146. Without them the float128 support break the C++ build for some packages.

https://sourceware.org/bugzilla/show_bug.cgi?id=21930
https://sourceware.org/bugzilla/show_bug.cgi?id=22146

This third series is for testing and review. Let's hope that glibc 2.26.1 will be released soon :)

Quoted 1 line

Let's hope that glibc 2.26.1 will be released soon :)

As discussed on IRC:

Apparently there won't be a glibc 2.26.1. It's up to distros to pick a git
commit to release.

So we have the choice to either keep a lot of patches in Buildroot, or use a git download instead of a tarball. The latter has the disadvantage of having a silly version "number" (the sha1), and that git downloads are generally much slower.

For now, we have those 6 patches in Buildroot. This may change in the future.