[Bug c++/63262] [4.9.2] ICE including math.h on darwin

["karo13de at googlemail dot com" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63262

--- Comment #16 from karsten <karo13de at googlemail dot com> ---
Hmm, hmm I am a packager in this case and don't know how to build that library.
It is delivered with the compiler from hpc.
What I could try is to replace it with install_name_tool with my MacPorts
library libgmp.10.dylib. But that will last some time.

By the way, I would appreciate a nice complete test case.

Good night,

Karsten

otool -L /usr/local/libexec/gcc/x86_64-apple-darwin14.0.0/4.9.2/cc1plus
/usr/local/libexec/gcc/x86_64-apple-darwin14.0.0/4.9.2/cc1plus:
    /usr/lib/libiconv.2.dylib (compatibility version 7.0.0, current version
7.0.0)
    /usr/local/lib/libmpc.3.dylib (compatibility version 4.0.0, current version
4.0.0)
    /usr/local/lib/libmpfr.4.dylib (compatibility version 6.0.0, current
version 6.2.0)
    /usr/local/lib/libgmp.10.dylib (compatibility version 13.0.0, current
version 13.0.0)
    /usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version
1213.0.0)

Am 02.11.2014 um 23:51 schrieb fxcoudert at gcc dot gnu.org
<gcc-bugzilla@gcc.gnu.org>:

> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63262
> 
> --- Comment #14 from Francois-Xavier Coudert <fxcoudert at gcc dot gnu.org> ---
> (In reply to karsten from comment #13)
>> libgmp.10.dylib`__gmpn_popcount + 26, queue = 'com.apple.main-thread', stop
>> reason = EXC_BAD_INSTRUCTION (code=EXC_I386_INVOP, subcode=0x0)
>>  * frame #0: 0x00000001415c747a libgmp.10.dylib`__gmpn_popcount + 26
>>    frame #1: 0x0000000141578f67 libmpfr.4.dylib`parsed_string_to_mpfr + 2567
>>    frame #2: 0x000000014157847b libmpfr.4.dylib`mpfr_strtofr + 2011
>>    frame #3: 0x00000001006f4d11 cc1plus`real_from_string(real_value*, char
>> const*) + 817
>>    frame #4: 0x00000001006f5741 cc1plus`real_from_string3(real_value*, char
>> const*, machine_mode) + 33
> 
> So the segfault happens in GMP. I also confirm that I don't see it after doing
> a clean build of the 4.9.2 sources you linked, which makes sense because I do
> my builds with an older GMP version.
> 
> What I would advise is building GMP without too much optimization, or with no
> optimization at all, and see if it fixes your issue.
> 
> PS: the attached short testcase might be useful. Could you confirm that it does
> trigger the ICE (internal compiler error)?
> 
> -- 
> You are receiving this mail because:
> You reported the bug.

Karsten
karo13de@googlemail.com