[PATCH v4 3/6] add test cases for storage of c99 for-loop declarations

[Luc Van Oostenryck <luc.vanoostenryck@gmail.com>]

Variable declared inside a C99 for-loop must have register
or automatic storage; static & extern storage are invalid.
These test cases verify that we warns if it is not the case.

Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@gmail.com>
---
 validation/c99-for-loop-decl.c | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/validation/c99-for-loop-decl.c b/validation/c99-for-loop-decl.c
index c2ceaab99..b9db8c9c6 100644
--- a/validation/c99-for-loop-decl.c
+++ b/validation/c99-for-loop-decl.c
@@ -9,10 +9,33 @@ static int bad_scope(void)
 	return i;			/* check-should-fail */
 }
 
+static int c99(void)
+{
+	int r = 0;
+
+	for (         int i = 0; i < 10; i++)	/* check-should-pass */
+		r = i;
+	for (    auto int j = 0; j < 10; j++)	/* check-should-pass */
+		r = j;
+	for (register int k = 0; k < 10; k++)	/* check-should-pass */
+		r = k;
+	for (  extern int l = 0; l < 10; l++)	/* check-should-fail */
+		r = l;
+	for (  extern int m;     m < 10; m++)	/* check-should-fail */
+		r = m;
+	for (  static int n = 0; n < 10; n++)	/* check-should-fail */
+		r = n;
+	return r;
+}
+
 /*
  * check-name: C99 for-loop declarations
+ * check-known-to-fail
  *
  * check-error-start
+c99-for-loop-decl.c:22:27: warning: symbol with external linkage has initializer
+c99-for-loop-decl.c:24:27: error: non-local var 'm' in for-loop initializer
+c99-for-loop-decl.c:26:27: error: non-local var 'n' in for-loop initializer
 c99-for-loop-decl.c:9:16: error: undefined identifier 'i'
  * check-error-end
  */
-- 
2.11.1