Implement C90 pedantic warning for duplicate declaration specifiers which are duplicated via a typedef. Patch by Tim Northover.
llvm-svn: 154136
diff --git a/clang/test/Sema/c89.c b/clang/test/Sema/c89.c
index 25a1048..110d7e1 100644
--- a/clang/test/Sema/c89.c
+++ b/clang/test/Sema/c89.c
@@ -92,4 +92,21 @@
struct x { int x,y[]; }; /* expected-warning {{Flexible array members are a C99-specific feature}} */
+/* Duplicated type-qualifiers aren't allowed by C90 */
+const const int c_i; /* expected-warning {{duplicate 'const' declaration specifier}} */
+typedef volatile int vol_int;
+volatile vol_int volvol_i; /* expected-warning {{duplicate 'volatile' declaration specifier}} */
+typedef volatile vol_int volvol_int; /* expected-warning {{duplicate 'volatile' declaration specifier}} */
+const int * const c;
+
+typedef const int CI;
+
+const CI mine1[5][5]; /* expected-warning {{duplicate 'const' declaration specifier}} */
+
+typedef CI array_of_CI[5];
+const array_of_CI mine2; /* expected-warning {{duplicate 'const' declaration specifier}} */
+
+typedef CI *array_of_pointer_to_CI[5];
+const array_of_pointer_to_CI mine3;
+
void main() {} /* expected-error {{'main' must return 'int'}} */