1 files changed, 39 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/nonnull-1.c b/gcc/testsuite/gcc.dg/nonnull-1.c
new file mode 100644
index 00000000000..51a8a3373ee
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/nonnull-1.c
@@ -0,0 +1,39 @@
+/* Test for the "nonnull" function attribute.  */
+/* Origin: Jason Thorpe <thorpej@wasabisystems.com> */
+/* { dg-do compile } */
+/* { dg-options "-Wnonnull" } */
+
+#include <stddef.h>
+
+extern void func1 (char *, char *, int) __attribute__((nonnull));
+
+extern void func2 (char *, char *) __attribute__((nonnull(1)));
+
+extern void func3 (char *, int, char *, int)
+  __attribute__((nonnull(1,3)));
+
+extern void func4 (char *, char *) __attribute__((nonnull(1)))
+  __attribute__((nonnull(2)));
+
+void
+foo (int i1, int i2, int i3, char *cp1, char *cp2, char *cp3)
+{
+  func1(cp1, cp2, i1);
+
+  func1(NULL, cp2, i1); /* { dg-warning "null" "null with argless nonnull 1" } */
+  func1(cp1, NULL, i1); /* { dg-warning "null" "null with argless nonnull 2" } */
+  func1(cp1, cp2, 0);
+
+  func2(cp1, NULL);
+  func2(NULL, cp1); /* { dg-warning "null" "null with single explicit nonnull" } */
+
+  func3(NULL, i2, cp3, i3); /* { dg-warning "null" "null with explicit nonnull 1" } */
+  func3(cp3, i2, NULL, i3); /* { dg-warning "null" "null with explicit nonnull 3" } */
+
+  func1(i1 ? cp1 : NULL, cp2, i3); /* { dg-warning "null" "null with cond expr rhs" } */
+  func1(i1 ? NULL : cp1, cp2, i3); /* { dg-warning "null" "null with cond expr lhs" } */
+  func1(i1 ? (i2 ? cp1 : NULL) : cp2, cp3, i3); /* { dg-warning "null" "null with nested cond expr" } */
+
+  func4(NULL, cp1); /* { dg-warning "null" "null with multiple attributes 1" } */
+  func4(cp1, NULL); /* { dg-warning "null" "null with multiple attributes 2" } */
+}