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libstdc++-v3: Add -fcf-protection=none to -march=i486 

-fcf-protection is automatically enabled in libstdc++ on Linux/x86.
Starting from

commit 77d372abec
Author: H.J. Lu <hjl.tools@gmail.com>
Date:   Thu Jan 14 05:56:46 2021 -0800

    x86: Error on -fcf-protection with incompatible target

GCC issues an error on -fcf-protection with incompatible target:

... -fcf-protection ... libstdc++-v3/testsuite/29_atomics/atomic_flag/test_and_set/explicit-hle.cc  -m32   -O2 -g0 -fno-exceptions -fno-asynchronous-unwind-tables -march=i486 ...
cc1plus: error: '-fcf-protection' is not compatible with this target
FAIL: 29_atomics/atomic_flag/test_and_set/explicit-hle.cc (test for excess errors)

Add -fcf-protection=none to -march=i486 to compile explicit-hle.cc.

	* testsuite/29_atomics/atomic_flag/test_and_set/explicit-hle.cc:
	Add -fcf-protection=none to -march=i486.
This commit is contained in:
H.J. Lu 2021-01-15 17:27:53 -08:00
parent 2f7f0d32e7
commit 2c356f221b
1 changed files with 1 additions and 1 deletions
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libstdc++-v3/testsuite/29_atomics/atomic_flag/test_and_set/explicit-hle.cc
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@ -1,6 +1,6 @@
// { dg-do compile { target i?86-*-* x86_64-*-* } }
// { dg-options "-O2 -g0 -fno-exceptions -fno-asynchronous-unwind-tables" }
// { dg-additional-options "-march=i486" { target ia32 } }
// { dg-additional-options "-march=i486 -fcf-protection=none" { target ia32 } }
// { dg-require-effective-target c++11 }
// { dg-skip-if "scans fail with LTO" { lto } { "-flto" } }
// { dg-final { scan-assembler-times "xacquire\|\.byte\[^\n\r]*0xf2" 14 } }