From: Dimitar Dimitrov <dimitar@dinux.eu>
Date: Mon, 5 Aug 2024 16:00:28 +0000 (+0300)
Subject: testsuite: Fix struct size check [PR116155]
X-Git-Tag: basepoints/gcc-16~6649
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b13e34699c7d27e561fcfe1b66ced1e50e69976f;p=thirdparty%2Fgcc.git

testsuite: Fix struct size check [PR116155]

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.

	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 <dimitar@dinux.eu>
---

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;
 }