glibc/SOURCES/glibc-rh1783303-5.patch
2021-09-16 08:48:07 +00:00

38 lines
1.5 KiB
Diff
Raw Blame History

This file contains ambiguous Unicode characters

This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

commit b5232c9f9e6048b8f780d3cbfadbc8e59bb90ce4
Author: Paul A. Clarke <pc@us.ibm.com>
Date: Mon Jul 8 17:06:19 2019 -0500
[powerpc] fenv_libc.h: protect use of __builtin_cpu_supports
Using __builtin_cpu_supports() requires support in GCC and Glibc.
My recent patch to fenv_libc.h added an unprotected use of
__builtin_cpu_supports(). Compilation of Glibc itself will fail
with a sufficiently new GCC and sufficiently old Glibc:
../sysdeps/powerpc/fpu/fegetexcept.c: In function __fegetexcept:
../sysdeps/powerpc/fpu/fenv_libc.h:52:20: error: builtin __builtin_cpu_supports needs GLIBC (2.23 and newer) that exports hardware capability bits [-Werror]
Reviewed-by: Florian Weimer <fweimer@redhat.com>
Fixes 3db85a9814784a74536a1f0e7b7ddbfef7dc84bb.
diff --git a/sysdeps/powerpc/fpu/fenv_libc.h b/sysdeps/powerpc/fpu/fenv_libc.h
index cc00df033da47c1a..9dca6e760cc51946 100644
--- a/sysdeps/powerpc/fpu/fenv_libc.h
+++ b/sysdeps/powerpc/fpu/fenv_libc.h
@@ -48,12 +48,14 @@ extern const fenv_t *__fe_mask_env (void) attribute_hidden;
#ifdef _ARCH_PWR9
# define fegetenv_status() fegetenv_status_ISA300()
-#else
+#elif defined __BUILTIN_CPU_SUPPORTS__
# define fegetenv_status() \
(__glibc_likely (__builtin_cpu_supports ("arch_3_00")) \
? fegetenv_status_ISA300() \
: fegetenv_register() \
)
+#else
+# define fegetenv_status() fegetenv_register ()
#endif
/* Equivalent to fesetenv, but takes a fenv_t instead of a pointer. */