1 files changed, 30 insertions, 0 deletions
diff --git a/clang/test/Sema/format-strings-c90.c b/clang/test/Sema/format-strings-c90.c
new file mode 100644
index 0000000..66ca507
--- /dev/null
+++ b/clang/test/Sema/format-strings-c90.c
@@ -0,0 +1,30 @@
+/* RUN: %clang_cc1 -fsyntax-only -verify -triple i386-apple-darwin9 -pedantic -std=c89 %s
+ */
+
+int scanf(const char * restrict, ...);
+int printf(const char *restrict, ...);
+
+void foo(char **sp, float *fp, int *ip) {
+  scanf("%as", sp); /* expected-warning{{'a' length modifier is not supported by ISO C}} */
+  scanf("%a[abc]", sp); /* expected-warning{{'a' length modifier is not supported by ISO C}} */
+
+  /* TODO: Warn that the 'a' conversion specifier is a C99 feature. */
+  scanf("%a", fp);
+  scanf("%afoobar", fp);
+  printf("%a", 1.0);
+  printf("%as", 1.0);
+  printf("%aS", 1.0);
+  printf("%a[", 1.0);
+  printf("%afoo", 1.0);
+
+  scanf("%da", ip);
+
+  /* Test argument type check for the 'a' length modifier. */
+  scanf("%as", fp); /* expected-warning{{format specifies type 'char **' but the argument has type 'float *'}}
+                       expected-warning{{'a' length modifier is not supported by ISO C}} */
+  scanf("%aS", fp); /* expected-warning{{format specifies type 'wchar_t **' (aka 'int **') but the argument has type 'float *'}}
+                       expected-warning{{'a' length modifier is not supported by ISO C}}
+                       expected-warning{{'S' conversion specifier is not supported by ISO C}} */
+  scanf("%a[abc]", fp); /* expected-warning{{format specifies type 'char **' but the argument has type 'float *'}}
+                           expected-warning{{'a' length modifier is not supported by ISO C}} */
+}