Hi!
I've committed following patch as obvious to add two tests that were
discussed in the recent thread.
2016-12-22 Jakub Jelinek <ja...@redhat.com>
PR middle-end/78858
* c-c++-common/ubsan/pr78858.c: New test.
* gcc.dg/nonnull-5.c: New test.
--- gcc/testsuite/c-c++-common/ubsan/pr78858.c.jj 2016-12-22
12:43:45.347067480 +0100
+++ gcc/testsuite/c-c++-common/ubsan/pr78858.c 2016-12-22 12:43:34.000000000
+0100
@@ -0,0 +1,10 @@
+/* PR middle-end/78858 */
+/* { dg-do compile } */
+/* { dg-options "-fsanitize=undefined -Wnonnull" } */
+
+void
+foo (char **x, const char *y)
+{
+ *x = (char *) __builtin_malloc (__builtin_strlen (y) + 1); /* { dg-bogus
"argument 1 null where non-null expected" } */
+ __builtin_strcpy (*x, y);
+}
--- gcc/testsuite/gcc.dg/nonnull-5.c.jj 2016-12-22 12:34:34.875208653 +0100
+++ gcc/testsuite/gcc.dg/nonnull-5.c 2016-12-22 12:34:27.924298825 +0100
@@ -0,0 +1,11 @@
+/* Reduced from https://sourceware.org/bugzilla/show_bug.cgi?id=20978 */
+/* { dg-do compile } */
+/* { dg-options "-O2 -Wnonnull" } */
+
+int
+foo (const char *name)
+{
+ if (name)
+ return 6;
+ return __builtin_strlen (name); /* { dg-warning "argument 1 null where
non-null expected" } */
+}
Jakub
