package/google-breakpad: replace references to 'struct ucontext' with 'ucontext_t'

new file mode 100644
index 0000000..e02ae26
@@ -0,0 +1,257 @@
+From 7975a962e1d6dbad5a46792a54e647abd7caf5f1 Mon Sep 17 00:00:00 2001
+From: Mark Mentovai <[email protected]>
+Date: Tue, 19 Sep 2017 22:48:30 -0400
+Subject: [PATCH] Replace remaining references to 'struct ucontext' with
+ 'ucontext_t'
+
+This relands
+https://chromium.googlesource.com/breakpad/breakpad/src/+/e3035bc406cee8a4d765e59ad46eb828705f17f4,
+which was accidentally committed to breakpad/breakpad/src, the read-only
+mirror of src in breakpad/breakpad. (Well, it should have been
+read-only.) See https://crbug.com/766164.
+
+This fixes issues with glibc-2.26.
+
+See https://bugs.gentoo.org/show_bug.cgi?id=628782 ,
+https://sourceware.org/git/?p=glibc.git;h=251287734e89a52da3db682a8241eb6bccc050c9 , and
+https://sourceware.org/ml/libc-alpha/2017-08/msg00010.html for context.
+Change-Id: Id66f474d636dd2afa450bab925c5514a800fdd6f
+Reviewed-on: https://chromium-review.googlesource.com/674304
+Reviewed-by: Mark Mentovai <[email protected]>
+
+(cherry picked from commit bddcc58860f522a0d4cbaa7e9d04058caee0db9d)
+[Romain: backport from upstream]
+Signed-off-by: Romain Naour <[email protected]>
+---
+ .../linux/dump_writer_common/ucontext_reader.cc    | 32 +++++++++++-----------
+ .../linux/dump_writer_common/ucontext_reader.h     | 14 +++++-----
+ src/client/linux/handler/exception_handler.cc      | 10 +++----
+ src/client/linux/handler/exception_handler.h       |  6 ++--
+ .../linux/microdump_writer/microdump_writer.cc     |  2 +-
+ .../linux/minidump_writer/minidump_writer.cc       |  2 +-
+ 6 files changed, 33 insertions(+), 33 deletions(-)
+
+diff --git a/src/client/linux/dump_writer_common/ucontext_reader.cc b/src/client/linux/dump_writer_common/ucontext_reader.cc
+index c80724d..052ce37 100644
+--- a/src/client/linux/dump_writer_common/ucontext_reader.cc
++++ b/src/client/linux/dump_writer_common/ucontext_reader.cc
+@@ -36,19 +36,19 @@ namespace google_breakpad {
+ 
+ // Minidump defines register structures which are different from the raw
+ // structures which we get from the kernel. These are platform specific
+-// functions to juggle the ucontext and user structures into minidump format.
++// functions to juggle the ucontext_t and user structures into minidump format.
+ 
+ #if defined(__i386__)
+ 
+-uintptr_t UContextReader::GetStackPointer(const struct ucontext* uc) {
++uintptr_t UContextReader::GetStackPointer(const ucontext_t* uc) {
+   return uc->uc_mcontext.gregs[REG_ESP];
+ }
+ 
+-uintptr_t UContextReader::GetInstructionPointer(const struct ucontext* uc) {
++uintptr_t UContextReader::GetInstructionPointer(const ucontext_t* uc) {
+   return uc->uc_mcontext.gregs[REG_EIP];
+ }
+ 
+-void UContextReader::FillCPUContext(RawContextCPU *out, const ucontext *uc,
++void UContextReader::FillCPUContext(RawContextCPU *out, const ucontext_t *uc,
+                                     const struct _libc_fpstate* fp) {
+   const greg_t* regs = uc->uc_mcontext.gregs;
+ 
+@@ -88,15 +88,15 @@ void UContextReader::FillCPUContext(RawContextCPU *out, const ucontext *uc,
+ 
+ #elif defined(__x86_64)
+ 
+-uintptr_t UContextReader::GetStackPointer(const struct ucontext* uc) {
++uintptr_t UContextReader::GetStackPointer(const ucontext_t* uc) {
+   return uc->uc_mcontext.gregs[REG_RSP];
+ }
+ 
+-uintptr_t UContextReader::GetInstructionPointer(const struct ucontext* uc) {
++uintptr_t UContextReader::GetInstructionPointer(const ucontext_t* uc) {
+   return uc->uc_mcontext.gregs[REG_RIP];
+ }
+ 
+-void UContextReader::FillCPUContext(RawContextCPU *out, const ucontext *uc,
++void UContextReader::FillCPUContext(RawContextCPU *out, const ucontext_t *uc,
+                                     const struct _libc_fpstate* fpregs) {
+   const greg_t* regs = uc->uc_mcontext.gregs;
+ 
+@@ -145,15 +145,15 @@ void UContextReader::FillCPUContext(RawContextCPU *out, const ucontext *uc,
+ 
+ #elif defined(__ARM_EABI__)
+ 
+-uintptr_t UContextReader::GetStackPointer(const struct ucontext* uc) {
++uintptr_t UContextReader::GetStackPointer(const ucontext_t* uc) {
+   return uc->uc_mcontext.arm_sp;
+ }
+ 
+-uintptr_t UContextReader::GetInstructionPointer(const struct ucontext* uc) {
++uintptr_t UContextReader::GetInstructionPointer(const ucontext_t* uc) {
+   return uc->uc_mcontext.arm_pc;
+ }
+ 
+-void UContextReader::FillCPUContext(RawContextCPU *out, const ucontext *uc) {
++void UContextReader::FillCPUContext(RawContextCPU *out, const ucontext_t *uc) {
+   out->context_flags = MD_CONTEXT_ARM_FULL;
+ 
+   out->iregs[0] = uc->uc_mcontext.arm_r0;
+@@ -184,15 +184,15 @@ void UContextReader::FillCPUContext(RawContextCPU *out, const ucontext *uc) {
+ 
+ #elif defined(__aarch64__)
+ 
+-uintptr_t UContextReader::GetStackPointer(const struct ucontext* uc) {
++uintptr_t UContextReader::GetStackPointer(const ucontext_t* uc) {
+   return uc->uc_mcontext.sp;
+ }
+ 
+-uintptr_t UContextReader::GetInstructionPointer(const struct ucontext* uc) {
++uintptr_t UContextReader::GetInstructionPointer(const ucontext_t* uc) {
+   return uc->uc_mcontext.pc;
+ }
+ 
+-void UContextReader::FillCPUContext(RawContextCPU *out, const ucontext *uc,
++void UContextReader::FillCPUContext(RawContextCPU *out, const ucontext_t *uc,
+                                     const struct fpsimd_context* fpregs) {
+   out->context_flags = MD_CONTEXT_ARM64_FULL;
+ 
+@@ -210,15 +210,15 @@ void UContextReader::FillCPUContext(RawContextCPU *out, const ucontext *uc,
+ 
+ #elif defined(__mips__)
+ 
+-uintptr_t UContextReader::GetStackPointer(const struct ucontext* uc) {
++uintptr_t UContextReader::GetStackPointer(const ucontext_t* uc) {
+   return uc->uc_mcontext.gregs[MD_CONTEXT_MIPS_REG_SP];
+ }
+ 
+-uintptr_t UContextReader::GetInstructionPointer(const struct ucontext* uc) {
++uintptr_t UContextReader::GetInstructionPointer(const ucontext_t* uc) {
+   return uc->uc_mcontext.pc;
+ }
+ 
+-void UContextReader::FillCPUContext(RawContextCPU *out, const ucontext *uc) {
++void UContextReader::FillCPUContext(RawContextCPU *out, const ucontext_t *uc) {
+ #if _MIPS_SIM == _ABI64
+   out->context_flags = MD_CONTEXT_MIPS64_FULL;
+ #elif _MIPS_SIM == _ABIO32
+diff --git a/src/client/linux/dump_writer_common/ucontext_reader.h b/src/client/linux/dump_writer_common/ucontext_reader.h
+index b6e77b4..2de80b7 100644
+--- a/src/client/linux/dump_writer_common/ucontext_reader.h
++++ b/src/client/linux/dump_writer_common/ucontext_reader.h
+@@ -39,23 +39,23 @@
+ 
+ namespace google_breakpad {
+ 
+-// Wraps platform-dependent implementations of accessors to ucontext structs.
++// Wraps platform-dependent implementations of accessors to ucontext_t structs.
+ struct UContextReader {
+-  static uintptr_t GetStackPointer(const struct ucontext* uc);
++  static uintptr_t GetStackPointer(const ucontext_t* uc);
+ 
+-  static uintptr_t GetInstructionPointer(const struct ucontext* uc);
++  static uintptr_t GetInstructionPointer(const ucontext_t* uc);
+ 
+-  // Juggle a arch-specific ucontext into a minidump format
++  // Juggle a arch-specific ucontext_t into a minidump format
+   //   out: the minidump structure
+   //   info: the collection of register structures.
+ #if defined(__i386__) || defined(__x86_64)
+-  static void FillCPUContext(RawContextCPU *out, const ucontext *uc,
++  static void FillCPUContext(RawContextCPU *out, const ucontext_t *uc,
+                              const struct _libc_fpstate* fp);
+ #elif defined(__aarch64__)
+-  static void FillCPUContext(RawContextCPU *out, const ucontext *uc,
++  static void FillCPUContext(RawContextCPU *out, const ucontext_t *uc,
+                              const struct fpsimd_context* fpregs);
+ #else
+-  static void FillCPUContext(RawContextCPU *out, const ucontext *uc);
++  static void FillCPUContext(RawContextCPU *out, const ucontext_t *uc);
+ #endif
+ };
+ 
+diff --git a/src/client/linux/handler/exception_handler.cc b/src/client/linux/handler/exception_handler.cc
+index b63f973..3d809b8 100644
+--- a/src/client/linux/handler/exception_handler.cc
++++ b/src/client/linux/handler/exception_handler.cc
+@@ -439,9 +439,9 @@ bool ExceptionHandler::HandleSignal(int sig, siginfo_t* info, void* uc) {
+   // Fill in all the holes in the struct to make Valgrind happy.
+   memset(&g_crash_context_, 0, sizeof(g_crash_context_));
+   memcpy(&g_crash_context_.siginfo, info, sizeof(siginfo_t));
+-  memcpy(&g_crash_context_.context, uc, sizeof(struct ucontext));
++  memcpy(&g_crash_context_.context, uc, sizeof(ucontext_t));
+ #if defined(__aarch64__)
+-  struct ucontext* uc_ptr = (struct ucontext*)uc;
++  ucontext_t* uc_ptr = (ucontext_t*)uc;
+   struct fpsimd_context* fp_ptr =
+       (struct fpsimd_context*)&uc_ptr->uc_mcontext.__reserved;
+   if (fp_ptr->head.magic == FPSIMD_MAGIC) {
+@@ -450,9 +450,9 @@ bool ExceptionHandler::HandleSignal(int sig, siginfo_t* info, void* uc) {
+   }
+ #elif !defined(__ARM_EABI__) && !defined(__mips__)
+   // FP state is not part of user ABI on ARM Linux.
+-  // In case of MIPS Linux FP state is already part of struct ucontext
++  // In case of MIPS Linux FP state is already part of ucontext_t
+   // and 'float_state' is not a member of CrashContext.
+-  struct ucontext* uc_ptr = (struct ucontext*)uc;
++  ucontext_t* uc_ptr = (ucontext_t*)uc;
+   if (uc_ptr->uc_mcontext.fpregs) {
+     memcpy(&g_crash_context_.float_state, uc_ptr->uc_mcontext.fpregs,
+            sizeof(g_crash_context_.float_state));
+@@ -476,7 +476,7 @@ bool ExceptionHandler::SimulateSignalDelivery(int sig) {
+   // ExceptionHandler::HandleSignal().
+   siginfo.si_code = SI_USER;
+   siginfo.si_pid = getpid();
+-  struct ucontext context;
++  ucontext_t context;
+   getcontext(&context);
+   return HandleSignal(sig, &siginfo, &context);
+ }
+diff --git a/src/client/linux/handler/exception_handler.h b/src/client/linux/handler/exception_handler.h
+index 591c310..42f4055 100644
+--- a/src/client/linux/handler/exception_handler.h
++++ b/src/client/linux/handler/exception_handler.h
+@@ -191,11 +191,11 @@ class ExceptionHandler {
+   struct CrashContext {
+     siginfo_t siginfo;
+     pid_t tid;  // the crashing thread.
+-    struct ucontext context;
++    ucontext_t context;
+ #if !defined(__ARM_EABI__) && !defined(__mips__)
+     // #ifdef this out because FP state is not part of user ABI for Linux ARM.
+-    // In case of MIPS Linux FP state is already part of struct
+-    // ucontext so 'float_state' is not required.
++    // In case of MIPS Linux FP state is already part of ucontext_t so
++    // 'float_state' is not required.
+     fpstate_t float_state;
+ #endif
+   };
+diff --git a/src/client/linux/microdump_writer/microdump_writer.cc b/src/client/linux/microdump_writer/microdump_writer.cc
+index 6f5b435..a508667 100644
+--- a/src/client/linux/microdump_writer/microdump_writer.cc
++++ b/src/client/linux/microdump_writer/microdump_writer.cc
+@@ -571,7 +571,7 @@ class MicrodumpWriter {
+ 
+   void* Alloc(unsigned bytes) { return dumper_->allocator()->Alloc(bytes); }
+ 
+-  const struct ucontext* const ucontext_;
++  const ucontext_t* const ucontext_;
+ #if !defined(__ARM_EABI__) && !defined(__mips__)
+   const google_breakpad::fpstate_t* const float_state_;
+ #endif
+diff --git a/src/client/linux/minidump_writer/minidump_writer.cc b/src/client/linux/minidump_writer/minidump_writer.cc
+index 86009b9..f2aec73 100644
+--- a/src/client/linux/minidump_writer/minidump_writer.cc
++++ b/src/client/linux/minidump_writer/minidump_writer.cc
+@@ -1248,7 +1248,7 @@ class MinidumpWriter {
+   const int fd_;  // File descriptor where the minidum should be written.
+   const char* path_;  // Path to the file where the minidum should be written.
+ 
+-  const struct ucontext* const ucontext_;  // also from the signal handler
++  const ucontext_t* const ucontext_;  // also from the signal handler
+ #if !defined(__ARM_EABI__) && !defined(__mips__)
+   const google_breakpad::fpstate_t* const float_state_;  // ditto
+ #endif
+-- 
+2.9.5
+