src/ci/docker/dist-armhf-linux/patches/glibc/ports-2.16.0/001-arm-libgcc_s_resume-used.patch

   1 commit bdb24c2851fd5f0ad9b82d7ea1db911d334b02d2
   2 Author: Joseph Myers <joseph@codesourcery.com>
   3 Date:   Tue May 20 21:27:13 2014 +0000
   4
   5     Fix ARM build with GCC trunk.
   6
   7     sysdeps/unix/sysv/linux/arm/unwind-resume.c and
   8     sysdeps/unix/sysv/linux/arm/unwind-forcedunwind.c have static
   9     variables that are written in C code but only read from toplevel asms.
  10     Current GCC trunk now optimizes away such apparently write-only static
  11     variables, so causing a build failure.  This patch marks those
  12     variables with __attribute_used__ to avoid that optimization.
  13
  14     Tested that this fixes the build for ARM.
  15
  16             * sysdeps/unix/sysv/linux/arm/unwind-forcedunwind.c
  17             (libgcc_s_resume): Use __attribute_used__.
  18             * sysdeps/unix/sysv/linux/arm/unwind-resume.c (libgcc_s_resume):
  19             Likewise.
  20
  21 diff --git a/sysdeps/unix/sysv/linux/arm/nptl/unwind-forcedunwind.c b/sysdeps/unix/sysv/linux/arm/nptl/unwind-forcedunwind.c
  22 index 29e2c2b00b04..e848bfeffdcb 100644
  23 --- a/ports/sysdeps/unix/sysv/linux/arm/nptl/unwind-forcedunwind.c
  24 +++ b/ports/sysdeps/unix/sysv/linux/arm/nptl/unwind-forcedunwind.c
  25 @@ -22,7 +22,8 @@
  26  #include <pthreadP.h>
  27
  28  static void *libgcc_s_handle;
  29 -static void (*libgcc_s_resume) (struct _Unwind_Exception *exc);
  30 +static void (*libgcc_s_resume) (struct _Unwind_Exception *exc)
  31 +  __attribute_used__;
  32  static _Unwind_Reason_Code (*libgcc_s_personality)
  33    (_Unwind_State, struct _Unwind_Exception *, struct _Unwind_Context *);
  34  static _Unwind_Reason_Code (*libgcc_s_forcedunwind)
  35 diff --git a/sysdeps/unix/sysv/linux/arm/nptl/unwind-resume.c b/sysdeps/unix/sysv/linux/arm/nptl/unwind-resume.c
  36 index 285b99b5ed0d..48d00fc83641 100644
  37 --- a/ports/sysdeps/unix/sysv/linux/arm/nptl/unwind-resume.c
  38 +++ b/ports/sysdeps/unix/sysv/linux/arm/nptl/unwind-resume.c
  39 @@ -20,7 +20,8 @@
  40  #include <stdio.h>
  41  #include <unwind.h>
  42
  43 -static void (*libgcc_s_resume) (struct _Unwind_Exception *exc);
  44 +static void (*libgcc_s_resume) (struct _Unwind_Exception *exc)
  45 +  __attribute_used__;
  46  static _Unwind_Reason_Code (*libgcc_s_personality)
  47    (_Unwind_State, struct _Unwind_Exception *, struct _Unwind_Context *);
  48