1 files changed, 65 insertions, 0 deletions
diff --git a/test/Sema/type-spec-struct-union.c b/test/Sema/type-spec-struct-union.c
new file mode 100644
index 0000000..2b68b78
--- /dev/null
+++ b/test/Sema/type-spec-struct-union.c
@@ -0,0 +1,65 @@
+// RUN: clang-cc -fsyntax-only -pedantic -verify %s
+
+/* This test checks the introduction of struct and union types based
+   on a type specifier of the form "struct-or-union identifier" when they
+   type has not yet been declared. See C99 6.7.2.3p8. */
+
+typedef struct S1 {
+  union {
+    struct S2 *x;
+    struct S3 *y;
+  } u1;
+} S1;
+
+int test_struct_scope(S1 *s1, struct S2 *s2, struct S3 *s3) {
+  if (s1->u1.x == s2) return 1;
+  if (s1->u1.y == s3) return 1;
+  return 0;
+}
+
+int test_struct_scope_2(S1 *s1) {
+  struct S2 { int x; } *s2 = 0;
+  if (s1->u1.x == s2) return 1; /* expected-warning {{comparison of distinct pointer types ('struct S2 *' and 'struct S2 *')}} */
+  return 0;
+}
+
+// FIXME: We do not properly implement C99 6.2.1p4, which says that
+// the type "struct S4" declared in the function parameter list has
+// block scope within the function definition. The problem, in this
+// case, is that the code is ill-formed but we warn about the two S4's
+// being incompatible (we think they are two different types).
+int test_struct_scope_3(struct S4 * s4) { // expected-warning{{declaration of 'struct S4' will not be visible outside of this function}}
+  struct S4 { int y; } *s4_2 = 0;
+  /*  if (s4 == s4_2) return 1; */
+  return 0;
+}
+
+void f(struct S5 { int y; } s5); // expected-warning{{declaration of 'struct S5' will not be visible outside of this function}}
+
+// PR clang/3312
+struct S6 {
+        enum { BAR } e;
+};
+
+void test_S6() {
+        struct S6 a;
+        a.e = BAR;
+}
+
+// <rdar://problem/6487669>
+typedef struct z_foo_s {
+  struct bar_baz *baz;
+} z_foo;
+typedef z_foo *z_foop;
+struct bar_baz {
+  enum {
+    SQUAT, FLAG, DICT4, DICT3, DICT2, DICT1, DICT0, HOP, CHECK4, CHECK3, CHECK2, CHECK1, DONE, BAD
+  } mode;
+  int             nowrap;
+};
+int 
+wizbiz_quxPoof(z)
+  z_foop       z;
+{
+  z->baz->mode = z->baz->nowrap ? HOP : SQUAT;
+}