[Bug math/30550] New: powerpc64le: GCC-specific code for isinf() is being used on clang

[Bug math/30550] New: powerpc64le: GCC-specific code for isinf() is being used on clang

[tuliom at ascii dot art.br]

https://sourceware.org/bugzilla/show_bug.cgi?id=30550

            Bug ID: 30550
           Summary: powerpc64le: GCC-specific code for isinf() is being
                    used on clang
           Product: glibc
           Version: 2.39
            Status: NEW
          Severity: normal
          Priority: P2
         Component: math
          Assignee: unassigned at sourceware dot org
          Reporter: tuliom at ascii dot art.br
  Target Milestone: ---

The error can be reproduced with the following:

$ cat test-isinf.c 
#include <math.h>

_Bool classify(long double x) { return isinf(x); }

$ clang -c -mabi=ibmlongdouble -mfloat128 test-isinf.c 
test-isinf.c:3:46: error: passing 'long double' to parameter of incompatible
type '_Float128' (aka '__float128')
_Bool classify(long double x) { return isinf(x); }
                                             ^
/usr/include/math.h:1026:21: note: expanded from macro 'isinf'
     ? __isinff128 (x) : __builtin_isinf_sign (x))
                    ^
/usr/include/bits/mathcalls-helper-functions.h:29:45: note: passing argument to
parameter '__value' here
__MATHDECL_ALIAS (int, __isinf,, (_Mdouble_ __value), isinf)
                                            ^
1 error generated.

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[Bug math/30550] powerpc64le: GCC-specific code for isinf() is being used on clang

[tuliom at ascii dot art.br]

https://sourceware.org/bugzilla/show_bug.cgi?id=30550

Tulio Magno Quites Machado Filho <tuliom at ascii dot art.br> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Target|                            |powerpc64le-linux-gnu
             Status|NEW                         |ASSIGNED
           Assignee|unassigned at sourceware dot org   |tuliom at ascii dot art.br

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[Bug math/30550] powerpc64le: GCC-specific code for isinf() is being used on clang

[tuliom at ascii dot art.br]

https://sourceware.org/bugzilla/show_bug.cgi?id=30550

--- Comment #1 from Tulio Magno Quites Machado Filho <tuliom at ascii dot art.br> ---
A fix has been proposed on libc-alpha:
https://patchwork.sourceware.org/project/glibc/patch/20230613215633.3179708-1-tuliom@ascii.art.br/

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[Bug math/30550] powerpc64le: GCC-specific code for isinf() is being used on clang

[cvs-commit at gcc dot gnu.org]

https://sourceware.org/bugzilla/show_bug.cgi?id=30550

--- Comment #2 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Tulio Magno Quites Machado Filho
<tuliom@sourceware.org>:

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=0a9e93842d8e535ac8174cb4ff7fb830b20e4ae7

commit 0a9e93842d8e535ac8174cb4ff7fb830b20e4ae7
Author: Tulio Magno Quites Machado Filho <tuliom@redhat.com>
Date:   Tue Jun 13 18:56:33 2023 -0300

    Stop applying a GCC-specific workaround on clang [BZ #30550]

    GCC was the only compiler affected by the issue with
    __builtin_isinf_sign and float128.

    Fix BZ #30550.

    Reported-by: Qiu Chaofan <qiucofan@cn.ibm.com>
    Reviewed-by: Florian Weimer <fweimer@redhat.com>

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[Bug math/30550] powerpc64le: GCC-specific code for isinf() is being used on clang

[tuliom at ascii dot art.br]

https://sourceware.org/bugzilla/show_bug.cgi?id=30550

Tulio Magno Quites Machado Filho <tuliom at ascii dot art.br> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |FIXED
             Status|ASSIGNED                    |RESOLVED
   Target Milestone|---                         |2.38

--- Comment #3 from Tulio Magno Quites Machado Filho <tuliom at ascii dot art.br> ---
Fixed in glibc 2.38.

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