The size of "struct only_fam_2" is dependent on the alignment of the
flexible array member "b", and not on the type of the preceding
bit-fields.  For most targets the two are equal.  But on default_packed
targets like pru-unknown-elf, the alignment of int is not equal to the
size of int, so the test failed.

Patch was suggested by Qing Zhao.  Tested on pru-unknown-elf and
x86_64-pc-linux-gnu.

Ok for master?

        PR testsuite/116155

gcc/testsuite/ChangeLog:

        * c-c++-common/fam-in-union-alone-in-struct-1.c: Adjust
        check to account for default_packed targets.

Signed-off-by: Dimitar Dimitrov <dimi...@dinux.eu>
---
 gcc/testsuite/c-c++-common/fam-in-union-alone-in-struct-1.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gcc/testsuite/c-c++-common/fam-in-union-alone-in-struct-1.c 
b/gcc/testsuite/c-c++-common/fam-in-union-alone-in-struct-1.c
index 39ebf17850b..9979e96fe70 100644
--- a/gcc/testsuite/c-c++-common/fam-in-union-alone-in-struct-1.c
+++ b/gcc/testsuite/c-c++-common/fam-in-union-alone-in-struct-1.c
@@ -45,7 +45,7 @@ int main ()
     __builtin_abort ();
   if (sizeof (struct only_fam) != 0)
     __builtin_abort ();
-  if (sizeof (struct only_fam_2) != sizeof (int))
+  if (sizeof (struct only_fam_2) != __alignof__ (int))
     __builtin_abort ();
   return 0;
 }
-- 
2.45.2

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