1 files changed, 8 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/cpp/if-4.c b/gcc/testsuite/gcc.dg/cpp/if-4.c
new file mode 100644
index 000000000..fbab9efc1
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/cpp/if-4.c
@@ -0,0 +1,8 @@
+/* Regression test for proper error message.  The token name isn't
+   NUL terminated, so we would print garbage after it.  */
+/* { dg-do compile } */
+
+#if 1 += 2   /* { dg-error "is not valid" "+= in if" } */
+syntax_error
+#endif
+int foo;