extwarn about decls intermixed with code in c89 mode.

llvm-svn: 41477

1 files changed, 19 insertions, 0 deletions

diff --git a/clang/test/Sema/c89.c b/clang/test/Sema/c89.c
new file mode 100644
index 00000000000..57085db6446
--- /dev/null
+++ b/clang/test/Sema/c89.c
@@ -0,0 +1,19 @@
+/* RUN: clang %s -std=c89 -pedantic -parse-ast-check
+ */
+void foo() {
+  {
+    int i;
+    i = i + 1;
+    int j;          /* expected-warning {{mixing declarations and code}} */
+  }
+  {
+    __extension__ int i;
+    i = i + 1;
+    int j;          /* expected-warning {{mixing declarations and code}} */
+  }
+  {
+    int i;
+    i = i + 1;
+    __extension__ int j; /* expected-warning {{mixing declarations and code}} */
+  }
+}