https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104220
Bug ID: 104220
Summary: [12 Regression] Build fail:
libgfortran/ieee/issignaling_fallback.h:140:21: error:
token "=" is not valid in preprocessor expressions
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Keywords: build
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: burnus at gcc dot gnu.org
CC: fxcoudert at gcc dot gnu.org
Target Milestone: ---
Target: powerpc64le-linux-gnu
Build: powerpc64le-linux-gnu
powerpc64le-linux-gnu now fails as follows, it did build yesterday. Namely:
gcc-mainline/libgfortran/ieee/issignaling_fallback.h:140:21: error: token "="
is not valid in preprocessor expressions
140 | #elif (__LDBL_DIG__ = 33) && __LDBL_IS_IEC_60559__
| ^
gcc-mainline/libgfortran/ieee/issignaling_fallback.h: In function
'__issignalingl':
gcc-mainline/libgfortran/ieee/issignaling_fallback.h:177:29: warning: unused
parameter 'x' [-Wunused-parameter]
177 | __issignalingl (long double x)
| ~~~~~~~~~~~~^
Makefile:7313: recipe for target 'ieee_helper.lo' failed
make[3]: *** [ieee_helper.lo] Error 1
Probable caused by the commit:
commit e89d0befe3ec3238fca6de2cb078eb403b8c7e99
Author: Francois-Xavier Coudert <fxcoud...@gcc.gnu.org>
AuthorDate: Mon Jan 17 12:46:48 2022 +0100
CommitDate: Mon Jan 24 23:16:16 2022 +0100
Fortran: provide a fallback implementation of issignaling
For targets with IEEE support but without the issignaling macro in libc
(currently, everywhere except glibc), this allows us to provide a fallback
implementation. In order to keep the code in ieee_helper.c relatively
readable, I've put that new implementation in a separate file,
issignaling_fallback.h.
libgfortran/ChangeLog:
* ieee/issignaling_fallback.h: New file.
* ieee/ieee_helper.c: Include issignaling_fallback.h when target
does not define issignaling macro.
gcc/testsuite/ChangeLog:
* gfortran.dg/ieee/signaling_1.f90: Do not require issignaling.
* gfortran.dg/ieee/signaling_2.f90: Add comment.
* gfortran.dg/ieee/signaling_3.f90: New test.
