> > Fix compilation errors with clang that masquerades as gcc 13.
>
> And here is a patch that fixes the clang warnings that appear to be caused
> by this version of __GNUC__.
And here is a patch that avoids a test failure. gcc >= 8 generates correct
floating point comparisons, gcc 4.2 and clang 17 don't. Another reason to
dislike it when clang lies.
2024-08-26 Bruno Haible <br...@clisp.org>
Fix a test failure from a clang that masquerades as gcc 13.
* tests/test-fenv-except-trapping-2.c (main): Skip the '4' test on
clang, since clang 17 still generates buggy comparisons, like gcc
versions < 8.
diff --git a/tests/test-fenv-except-trapping-2.c
b/tests/test-fenv-except-trapping-2.c
index 166454080e..e3c7299a67 100644
--- a/tests/test-fenv-except-trapping-2.c
+++ b/tests/test-fenv-except-trapping-2.c
@@ -450,11 +450,11 @@ main (int argc, char *argv[])
only when a source operand is an SNaN. The COMISD instruction
signals an invalid numeric exception only if a source operand is
either an SNaN or a QNaN."
- - gcc < 8 (except when option -mno-ieee-fp is used) generates 'ucom*'
- or 'fucom*' instructions and thus fails the test.
+ - gcc < 8 (except when option -mno-ieee-fp is used) and clang generate
+ 'ucom*' or 'fucom*' instructions and thus fail the test.
- gcc >= 8 generates 'com*' or 'fcom*' instructions and thus passes
the test. */
- #if (__GLIBC__ >= 2 && ((defined __x86_64__ || defined _M_X64) ||
(defined __i386 || defined _M_IX86)) && __GNUC__ < 8) \
+ #if (__GLIBC__ >= 2 && ((defined __x86_64__ || defined _M_X64) ||
(defined __i386 || defined _M_IX86)) && (__GNUC__ < 8 || defined __clang__)) \
|| (__GLIBC__ >= 2 && (defined __powerpc__ || (defined __s390__ ||
defined __s390x__))) \
|| (__GLIBC__ >= 2 && __FreeBSD_kernel__ && ((defined __x86_64__ ||
defined _M_X64) || (defined __i386 || defined _M_IX86))) \
|| (defined MUSL_LIBC && ((defined __i386 || defined _M_IX86) ||
defined __powerpc__)) \
