[gcc r13-382] testsuite: Make AArch64 attributes_7.c generate unique report lines.

[gcc r13-382] testsuite: Make AArch64 attributes_7.c generate unique report lines.

[Christophe Lyon]

https://gcc.gnu.org/g:bac63f1ea9121a59e980981cfb8b2ea1869f12f0

commit r13-382-gbac63f1ea9121a59e980981cfb8b2ea1869f12f0
Author: Christophe Lyon <christophe.lyon@arm.com>
Date:   Fri May 6 18:30:51 2022 +0100

    testsuite: Make AArch64 attributes_7.c generate unique report lines.
    
    This test is executed in both C and C++ modes, lines 98 and 100 pass
    in C++ and are xfail in C.
    
    This results in similar lines in gcc.sum and g++.sum, differing by the
    PASS or XFAIL prefix, which confuses compare_test: it reports these
    tests twice, as "now fail, but worked before" and "now work, but
    didn't before". To make the diagnostic different betweek C and C++, I
    use $tool in the dg-error comment field.
    
    2022-05-13  Christophe Lyon  <christophe.lyon@arm.com>
    
            gcc/testsuite/
            * gcc.target/aarch64/sve/acle/general/attributes_7.c: Make
            diagnostic unique.

Diff:
---
 gcc/testsuite/gcc.target/aarch64/sve/acle/general/attributes_7.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/gcc/testsuite/gcc.target/aarch64/sve/acle/general/attributes_7.c b/gcc/testsuite/gcc.target/aarch64/sve/acle/general/attributes_7.c
index 621666ce6c9..95be60591fb 100644
--- a/gcc/testsuite/gcc.target/aarch64/sve/acle/general/attributes_7.c
+++ b/gcc/testsuite/gcc.target/aarch64/sve/acle/general/attributes_7.c
@@ -95,9 +95,9 @@ f (int c)
   fb = sb;
 
   (void) (c ? sb : sb);
-  (void) (c ? sb : fb); // { dg-error {type mismatch|different types} "" { xfail c } }
+  (void) (c ? sb : fb); // { dg-error {type mismatch|different types} "$tool" { xfail c } }
 
-  (void) (c ? fb : sb); // { dg-error {type mismatch|different types} "" { xfail c } }
+  (void) (c ? fb : sb); // { dg-error {type mismatch|different types} "$tool" { xfail c } }
   (void) (c ? fb : fb);
 }