From: David Malcolm <dmalcolm@redhat.com>
Date: Mon, 19 Feb 2024 23:07:59 +0000 (-0500)
Subject: analyzer, testsuite: add regression test [PR110520]
X-Git-Tag: basepoints/gcc-15~1064
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=eb37ea529745c38dcf86c3cdbedb66df69ea9e35;p=thirdparty%2Fgcc.git

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>
---

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'" } */
+}