[PATCH] x86-64: Compile ISA versions of modf/modff with -fno-stack-protector

[H.J. Lu]

Since modf and modff are compiled into both libc and libm, when glibc is
configured with --enable-stack-protector=all, ISA versions of modf and
modff should be compiled with -fno-stack-protector to avoid calling
__stack_chk_fail via PLT in libc.so.

This fixes BZ #33165.

Signed-off-by: H.J. Lu <hjl.tools@gmail.com>
---
 sysdeps/x86_64/fpu/multiarch/Makefile | 15 +++++++++++----
 1 file changed, 11 insertions(+), 4 deletions(-)

diff --git a/sysdeps/x86_64/fpu/multiarch/Makefile b/sysdeps/x86_64/fpu/multiarch/Makefile
index 5fe872b898..81a870d3b1 100644
--- a/sysdeps/x86_64/fpu/multiarch/Makefile
+++ b/sysdeps/x86_64/fpu/multiarch/Makefile
@@ -159,11 +159,18 @@ CFLAGS-s_sin-avx.c = -msse2avx -DSSE2AVX
 CFLAGS-s_tan-avx.c = -msse2avx -DSSE2AVX
 CFLAGS-s_sincos-avx.c = -msse2avx -DSSE2AVX
 
-CFLAGS-s_modf-sse4_1.c = -msse4.1 -fno-builtin-modff32x -fno-builtin-modff64
-CFLAGS-s_modff-sse4_1.c = -msse4.1 -fno-builtin-modff32
+CFLAGS-s_modf-c.c = $(no-stack-protector)
+CFLAGS-s_modff-c.c = $(no-stack-protector)
 
-CFLAGS-s_modf-avx.c = -msse2avx -DSSE2AVX -fno-builtin-modff32x -fno-builtin-modff64
-CFLAGS-s_modff-avx.c = -msse2avx -DSSE2AVX -fno-builtin-modff32
+CFLAGS-s_modf-sse4_1.c = -msse4.1 -fno-builtin-modff32x \
+			 -fno-builtin-modff64 $(no-stack-protector)
+CFLAGS-s_modff-sse4_1.c = -msse4.1 -fno-builtin-modff32 \
+			  $(no-stack-protector)
+
+CFLAGS-s_modf-avx.c = -msse2avx -DSSE2AVX -fno-builtin-modff32x \
+		      $(no-stack-protector) -fno-builtin-modff64
+CFLAGS-s_modff-avx.c = -msse2avx -DSSE2AVX -fno-builtin-modff32 \
+		      $(no-stack-protector)
 endif
 
 ifeq ($(subdir),mathvec)
-- 
2.50.1