[Bug other/56811] [4.8/4.9/4.10 Regression] libbacktrace causes undefined symbol "_Unwind_GetIPInfo" on ia64-hpux

["alm at sibmail dot ru" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56811

Alexander <alm at sibmail dot ru> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |alm at sibmail dot ru

--- Comment #10 from Alexander <alm at sibmail dot ru> ---
build gcc-4.8.2 on HP-UX 11.31 IA64 fails.

The problem is in the change to check function _Unwind_GetIPInfo present.
In the 4.8.x autoconf compile test added:

$as_echo_n "checking for _Unwind_GetIPInfo... " >&6; }
  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h.  */
#include "unwind.h"
        struct _Unwind_Context *context;
        int ip_before_insn = 0;
int
main ()
{
return _Unwind_GetIPInfo (context, &ip_before_insn);
  ;
  return 0;
}

Build compiller has function _Unwind_GetIPInfo in fixinclude unwind.h:
extern _Unwind_Ptr _Unwind_GetIPInfo (struct _Unwind_Context *, int *);

comment it out - fix this problem.

But now problem in the stage1 xgcc: it has segmentation fault in
cc1 while compile simple c test:

checking for ia64-hp-hpux11.31-gcc...
/import/home/nskdvlp/Melnikov/gcc-4.8/build/./gcc/xgcc
-B/import/home/nskdvlp/Melnikov/gcc-4.8/build/./gcc/
-B/import/home/nskdvlp/Melnikov/gcc-4.8/gcc.x1/ia64-hp-hpux11.31/bin/
-B/import/home/nskdvlp/Melnikov/gcc-4.8/gcc.x1/ia64-hp-hpux11.31/lib/ -isystem
/import/home/nskdvlp/Melnikov/gcc-4.8/gcc.x1/ia64-hp-hpux11.31/include -isystem
/import/home/nskdvlp/Melnikov/gcc-4.8/gcc.x1/ia64-hp-hpux11.31/sys-include

sendsig: useracc failed. 0xffffffffffffb200 0x00000000005000

Pid 6320 was killed due to failure in writing the signal context - possible
stack overflow.
checking for suffix of object files...
sendsig: useracc failed. 0xffffffffffffb200 0x00000000005000

Pid 6325 was killed due to failure in writing the signal context - possible
stack overflow.
configure: error: in
`/import/home/nskdvlp/Melnikov/gcc-4.8/build/ia64-hp-hpux11.31/libgcc':
configure: error: cannot compute suffix of object files: cannot compile
See `config.log' for more details.
gmake[2]: *** [configure-stage1-target-libgcc] Error 1
gmake[2]: Leaving directory `/import/home/nskdvlp/Melnikov/gcc-4.8/build'
gmake[1]: *** [stage1-bubble] Error 2
gmake[1]: Leaving directory `/import/home/nskdvlp/Melnikov/gcc-4.8/build'
gmake: *** [all] Error 2