commit 43006a3776e57515be633f7858438b7638b047db
Author: Stefan Liebler <stli@linux.ibm.com>
Date: Tue Oct 29 09:12:19 2019 +0100
S390: Fp comparison are now raising FE_INVALID with gcc 10.
The s390 gcc bug https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77918
"S390: Floating point comparisons don't raise invalid for unordered operands."
is fixed with gcc 10. Thus we conditionally set FIX_COMPARE_INVALID
to 0 or 1.
@@ -27,10 +27,12 @@
<https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77918>.
There exists an equivalent gcc bugzilla for Intel:
<https://gcc.gnu.org/bugzilla/show_bug.cgi?id=52451>.
- Once the s390 gcc bug is fixed, the definition of FIX_COMPARE_INVALID
- should have a __GNUC_PREREQ conditional added so that e.g. the workaround
- to call feraiseexcept (FE_INVALID) in math/s_iseqsig_template.c can be
- avoided. */
-#define FIX_COMPARE_INVALID 1
+ This s390 gcc bug is fixed with gcc 10, thus we don't need the workaround
+ to call feraiseexcept (FE_INVALID) in math/s_iseqsig_template.c. */
+#if __GNUC_PREREQ (10, 0)
+# define FIX_COMPARE_INVALID 0
+#else
+# define FIX_COMPARE_INVALID 1
+#endif
#endif /* fix-fp-int-compare-invalid.h */