uClibc trunk build error

Hi,

I'm seeing a compile error with uClibc trunk (commit 60c1fe7, "nptl/allocatestack.c: Fix stack mprotect") - ported to ARC architecture (with old pthreads + no-legacy-syscall ABI)

The test case is extracted from a dated version of LTP open posix suite and it simply involves
(1) #include signal.h
(2) build options -D_POSIX_C_SOURCE=200112L

#include <signal.h>

int main(void)

{
    return 0;
}

See the patch below to see the exact error:

The problem is happening because pthreadtypes.h doesn't ensure that all it's dependencies are actually met
IMHO it's not an arch specific error, but a generic one, primarily triggered after the following upstream commit
52029220899bc6, "bits/types.h: remove thread types, users should include pthread.h"

Please consider applying.

Thx,
-Vineet

---------------------->
From: Vineet Gupta <[email protected]>
Date: Sat, 9 Mar 2013 11:41:08 +0530
Subject: [PATCH] libpthreads{,old}: Fix Build error

A user application built with -D_POSIX_C_SOURCE=200112L and
#include signal.h, yields following compilation error:

------------------->8-----------------------------
arc-linux-uclibc-gcc -D_POSIX_C_SOURCE=200112L hello.c
In file included from /opt/INSTALL/lib/gcc/arc-linux-uclibc/4.4.7/../../../../arc-linux-uclibc/sys-include/signal.h:429,

                 from hello.c:1:

/opt/INSTALL/lib/gcc/arc-linux-uclibc/4.4.7/../../../../arc-linux-uclibc/sys-include/bits/pthreadtypes.h:48:
error: expected specifier-qualifier-list before 'size_t' ------------------->8-----------------------------

The fix is to make sure size_t is explicitly provided to pthreadtype.h

Signed-off-by Vineet Gupta <[email protected]>

---
 .../sysdeps/pthread/bits/pthreadtypes.h            |    3 +++
 .../sysdeps/pthread/bits/pthreadtypes.h            |    3 +++
 2 files changed, 6 insertions(+), 0 deletions(-)

libpthread/linuxthreads.old/sysdeps/pthread/bits/pthreadtypes.h +3 -0

index faec63b..3eb5929 100644
@@ -19,6 +19,9 @@
 #ifndef _BITS_PTHREADTYPES_H
 #define _BITS_PTHREADTYPES_H    1
 
+#define __need_size_t
+#include <stddef.h>
+
 #define __need_schedparam
 #include <bits/sched.h>
 

libpthread/linuxthreads/sysdeps/pthread/bits/pthreadtypes.h +0 -0

index 4ea6d8a..8d01c89 100644