1 files changed, 30 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/c90-const-expr-10.c b/gcc/testsuite/gcc.dg/c90-const-expr-10.c
new file mode 100644
index 000000000..30c60e31f
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/c90-const-expr-10.c
@@ -0,0 +1,30 @@
+/* Test for constant expressions: invalid null pointer constants in
+   various contexts (make sure NOPs are not inappropriately
+   stripped).  */
+/* Origin: Joseph Myers <joseph@codesourcery.com> */
+/* { dg-do compile } */
+/* { dg-options "-std=iso9899:1990 -pedantic-errors" } */
+
+__extension__ typedef __SIZE_TYPE__ size_t;
+
+void *p = (size_t)(void *)0; /* { dg-error "without a cast" } */
+struct s { void *a; } q = { (size_t)(void *)0 }; /* { dg-error "without a cast|near initialization" } */
+void *
+f (void)
+{
+  void *r;
+  r = (size_t)(void *)0; /* { dg-error "without a cast" } */
+  return (size_t)(void *)0; /* { dg-error "without a cast" } */
+}
+void g (void *); /* { dg-message "but argument is of type" } */
+void
+h (void)
+{
+  g ((size_t)(void *)0); /* { dg-error "without a cast" } */
+}
+void g2 (int, void *); /* { dg-message "but argument is of type" } */
+void
+h2 (void)
+{
+  g2 (0, (size_t)(void *)0); /* { dg-error "without a cast" } */
+}