https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117624
Bug ID: 117624
Summary: [15 Regression] INFINITY in libgcc2.c conflicts with
float.h definition from C23
Product: gcc
Version: 15.0
Status: UNCONFIRMED
Keywords: build
Severity: blocker
Priority: P3
Component: libgcc
Assignee: pinskia at gcc dot gnu.org
Reporter: pinskia at gcc dot gnu.org
Target Milestone: ---
Since changing the default over to C23, the build for aarch64-linux-gnu is
failing due to redefinition of INFINITY:
../../../gcc/libgcc/libgcc2.c:2676:9: error: ‘INFINITY’ redefined [-Werror]
2676 | #define INFINITY CONCAT2(__builtin_huge_val, CEXT) ()
| ^~~~~~~~
In file included from ../../../gcc/libgcc/../gcc/tsystem.h:45,
from ../../../gcc/libgcc/libgcc2.c:27:
/home/builder/worker/gcc-fedora-arm64/gcc-build/gcc/include/float.h:262:9:
note: this is the location of the previous definition
262 | #define INFINITY (__builtin_inff ())
| ^~~~~~~~
cc1: all warnings being treated as errors
make[2]: *** [Makefile:512: _divhc3.o] Error 1
https://gcc.gnu.org/pipermail/gcc/2024-November/245152.html
I am filing this to remind myself to get to this tomorrow.
