1 files changed, 13 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/gnu-cond-expr-3.c b/gcc/testsuite/gcc.dg/gnu-cond-expr-3.c
new file mode 100644
index 00000000000..e15ed0259c7
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/gnu-cond-expr-3.c
@@ -0,0 +1,13 @@
+/* Test diagnostic for GNU extension: omitting middle term of
+   conditional expression.  Test with -pedantic-errors.  */
+/* Origin: Joseph Myers <joseph@codesourcery.com> */
+/* { dg-do compile } */
+/* { dg-options "-std=gnu99 -pedantic-errors" } */
+
+int a, b, c;
+
+void
+f (void)
+{
+  c = (++a ? : b); /* { dg-error "error: ISO C forbids omitting the middle term of a \\?: expression" } */
+}