From f72c8918416f67aad907752f1892c19eda12eecb Mon Sep 17 00:00:00 2001
From: Jakub Jelinek <jakub@redhat.com>
Date: Wed, 1 Mar 2023 10:49:38 +0100
Subject: [PATCH] ubsan: Add another testcase for [0] array in the middle of
struct [PR108894]
I think it is useful to cover also this, rather than just arrays at the
flexible array member positions.
2023-03-01 Jakub Jelinek <jakub@redhat.com>
PR sanitizer/108894
* c-c++-common/ubsan/bounds-16.c: New test.
---
gcc/testsuite/c-c++-common/ubsan/bounds-16.c | 15 +++++++++++++++
1 file changed, 15 insertions(+)
create mode 100644 gcc/testsuite/c-c++-common/ubsan/bounds-16.c
diff --git a/gcc/testsuite/c-c++-common/ubsan/bounds-16.c b/gcc/testsuite/c-c++-common/ubsan/bounds-16.c
new file mode 100644
index 000000000000..0c27ff9cce42
--- /dev/null
+++ b/gcc/testsuite/c-c++-common/ubsan/bounds-16.c
@@ -0,0 +1,15 @@
+/* PR sanitizer/108894 */
+/* { dg-do run } */
+/* { dg-options "-fsanitize=bounds -fsanitize-recover=bounds" } */
+/* { dg-output "index 1 out of bounds for type 'int \\\[\[*0-9x]*\\\]'\[^\n\r]*(\n|\r\n|\r)" } */
+/* { dg-output "\[^\n\r]*index 0 out of bounds for type 'int \\\[\[*0-9x]*\\\]'" } */
+
+struct S { int a; int b[0]; int c; } s;
+
+int
+main ()
+{
+ int *volatile p = &s.b[0];
+ p = &s.b[1];
+ int volatile q = s.b[0];
+}
--
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