[gcc r13-6519] aarch64: testsuite: disable stack protector for sve-pcs tests

[gcc r13-6519] aarch64: testsuite: disable stack protector for sve-pcs tests

[Xi Ruoyao]

https://gcc.gnu.org/g:edb336cc575a82cfc2a883e4c3453c36267482c1

commit r13-6519-gedb336cc575a82cfc2a883e4c3453c36267482c1
Author: Xi Ruoyao <xry111@xry111.site>
Date:   Sat Sep 24 14:20:12 2022 +0800

    aarch64: testsuite: disable stack protector for sve-pcs tests
    
    If GCC is configured with --enable-default-ssp, the stack protector can
    make many sve-pcs tests fail.
    
    gcc/testsuite/ChangeLog:
    
            * gcc.target/aarch64/sve/pcs/aarch64-sve-pcs.exp (sve_flags):
            Add -fno-stack-protector.

Diff:
---
 gcc/testsuite/gcc.target/aarch64/sve/pcs/aarch64-sve-pcs.exp | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/gcc/testsuite/gcc.target/aarch64/sve/pcs/aarch64-sve-pcs.exp b/gcc/testsuite/gcc.target/aarch64/sve/pcs/aarch64-sve-pcs.exp
index 5562502cc07..3dbf73f67c9 100644
--- a/gcc/testsuite/gcc.target/aarch64/sve/pcs/aarch64-sve-pcs.exp
+++ b/gcc/testsuite/gcc.target/aarch64/sve/pcs/aarch64-sve-pcs.exp
@@ -37,11 +37,12 @@ if ![info exists DEFAULT_CFLAGS] then {
 # Initialize `dg'.
 dg-init
 
-# Force SVE if we're not testing it already.
+# Force SVE if we're not testing it already.  And, disable stack protector
+# to avoid test failures with --enable-default-ssp.
 if { [check_effective_target_aarch64_sve] } {
-    set sve_flags ""
+    set sve_flags "-fno-stack-protector"
 } else {
-    set sve_flags "-march=armv8.2-a+sve"
+    set sve_flags "-march=armv8.2-a+sve -fno-stack-protector"
 }
 
 # Main loop.