From eb37ea529745c38dcf86c3cdbedb66df69ea9e35 Mon Sep 17 00:00:00 2001
From: David Malcolm <dmalcolm@redhat.com>
Date: Mon, 19 Feb 2024 18:07:59 -0500
Subject: [PATCH] analyzer, testsuite: add regression test [PR110520]
gcc/testsuite/ChangeLog:
PR analyzer/110520
* c-c++-common/analyzer/null-deref-pr110520.c: New test.
Signed-off-by: David Malcolm <dmalcolm@redhat.com>
---
gcc/testsuite/c-c++-common/analyzer/null-deref-pr110520.c | 8 ++++++++
1 file changed, 8 insertions(+)
create mode 100644 gcc/testsuite/c-c++-common/analyzer/null-deref-pr110520.c
diff --git a/gcc/testsuite/c-c++-common/analyzer/null-deref-pr110520.c b/gcc/testsuite/c-c++-common/analyzer/null-deref-pr110520.c
new file mode 100644
index 000000000000..b57027689eed
--- /dev/null
+++ b/gcc/testsuite/c-c++-common/analyzer/null-deref-pr110520.c
@@ -0,0 +1,8 @@
+#include "analyzer-decls.h"
+
+int main(void) {
+ char buf[] = "0";
+ int *ptr = (int *)(__builtin_strlen(buf) - 1);
+ __analyzer_eval((__builtin_strlen(buf)) == 1); /* { dg-warning "TRUE" } */
+ *ptr = 10086; /* { dg-warning "dereference of NULL 'ptr'" } */
+}
--
GitLab