[gcc r13-696] testsuite: Mark extra warnings for default_packed

[Dimitar Dimitrov <dimitar@gcc.gnu.org>]

https://gcc.gnu.org/g:bad2999ab2b910c2e6b4494c772163de2b7e90e5

commit r13-696-gbad2999ab2b910c2e6b4494c772163de2b7e90e5
Author: Dimitar Dimitrov <dimitar@dinux.eu>
Date:   Sat May 14 21:40:11 2022 +0300

    testsuite: Mark extra warnings for default_packed
    
    If the target uses packed structs by default, there are no trailing
    padding bytes allocated.  Hence extra warnings are emitted.
    
    gcc/testsuite/ChangeLog:
    
            * gcc.dg/Warray-bounds-48-novec.c: Add expected warnings
            if target packs the structs by default.
    
    Signed-off-by: Dimitar Dimitrov <dimitar@dinux.eu>

Diff:
---
 gcc/testsuite/gcc.dg/Warray-bounds-48-novec.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/gcc/testsuite/gcc.dg/Warray-bounds-48-novec.c b/gcc/testsuite/gcc.dg/Warray-bounds-48-novec.c
index da179a2c0f5..5cae8566209 100644
--- a/gcc/testsuite/gcc.dg/Warray-bounds-48-novec.c
+++ b/gcc/testsuite/gcc.dg/Warray-bounds-48-novec.c
@@ -238,15 +238,17 @@ static void warn_a1_init (struct A1 *p)
 
 static void warn_a1_local_buf (struct A1 *p)
 {
-  p->a1[0] = 0; p->a1[1] = 1; p->a1[2] = 2; p->a1[3] = 3;
+  p->a1[0] = 0; p->a1[1] = 1; p->a1[2] = 2;
 
+  p->a1[3] = 3;	    // { dg-warning "\\\[-Warray-bounds" "" { target default_packed } }
   p->a1[4] = 4;     // { dg-warning "\\\[-Warray-bounds" }
 }
 
 static void warn_a1_extern_buf (struct A1 *p)
 {
-  p->a1[0] = 0; p->a1[1] = 1; p->a1[2] = 2; p->a1[3] = 3; p->a1[4] = 4;
+  p->a1[0] = 0; p->a1[1] = 1; p->a1[2] = 2; p->a1[3] = 3;
 
+  p->a1[4] = 4;	    // { dg-warning "\\\[-Warray-bounds" "" { target default_packed } }
   p->a1[5] = 5;     // { dg-warning "\\\[-Warray-bounds" }
 }