| commit bdb24c2851fd5f0ad9b82d7ea1db911d334b02d2 |
| Author: Joseph Myers <joseph@codesourcery.com> |
| Date: Tue May 20 21:27:13 2014 +0000 |
| |
| Fix ARM build with GCC trunk. |
| |
| sysdeps/unix/sysv/linux/arm/unwind-resume.c and |
| sysdeps/unix/sysv/linux/arm/unwind-forcedunwind.c have static |
| variables that are written in C code but only read from toplevel asms. |
| Current GCC trunk now optimizes away such apparently write-only static |
| variables, so causing a build failure. This patch marks those |
| variables with __attribute_used__ to avoid that optimization. |
| |
| Tested that this fixes the build for ARM. |
| |
| * sysdeps/unix/sysv/linux/arm/unwind-forcedunwind.c |
| (libgcc_s_resume): Use __attribute_used__. |
| * sysdeps/unix/sysv/linux/arm/unwind-resume.c (libgcc_s_resume): |
| Likewise. |
| |
| diff --git a/sysdeps/unix/sysv/linux/arm/nptl/unwind-forcedunwind.c b/sysdeps/unix/sysv/linux/arm/nptl/unwind-forcedunwind.c |
| index 29e2c2b00b04..e848bfeffdcb 100644 |
| --- a/ports/sysdeps/unix/sysv/linux/arm/nptl/unwind-forcedunwind.c |
| +++ b/ports/sysdeps/unix/sysv/linux/arm/nptl/unwind-forcedunwind.c |
| @@ -22,7 +22,8 @@ |
| #include <pthreadP.h> |
| |
| static void *libgcc_s_handle; |
| -static void (*libgcc_s_resume) (struct _Unwind_Exception *exc); |
| +static void (*libgcc_s_resume) (struct _Unwind_Exception *exc) |
| + __attribute_used__; |
| static _Unwind_Reason_Code (*libgcc_s_personality) |
| (_Unwind_State, struct _Unwind_Exception *, struct _Unwind_Context *); |
| static _Unwind_Reason_Code (*libgcc_s_forcedunwind) |
| diff --git a/sysdeps/unix/sysv/linux/arm/nptl/unwind-resume.c b/sysdeps/unix/sysv/linux/arm/nptl/unwind-resume.c |
| index 285b99b5ed0d..48d00fc83641 100644 |
| --- a/ports/sysdeps/unix/sysv/linux/arm/nptl/unwind-resume.c |
| +++ b/ports/sysdeps/unix/sysv/linux/arm/nptl/unwind-resume.c |
| @@ -20,7 +20,8 @@ |
| #include <stdio.h> |
| #include <unwind.h> |
| |
| -static void (*libgcc_s_resume) (struct _Unwind_Exception *exc); |
| +static void (*libgcc_s_resume) (struct _Unwind_Exception *exc) |
| + __attribute_used__; |
| static _Unwind_Reason_Code (*libgcc_s_personality) |
| (_Unwind_State, struct _Unwind_Exception *, struct _Unwind_Context *); |
| |
