vendor/clang/clang-release_33-r183502

1 files changed, 29 insertions, 0 deletions

diff --git a/test/Sema/extern-redecl.c b/test/Sema/extern-redecl.c
index 9a085de0c001..e9a4c571bd2d 100644
--- a/test/Sema/extern-redecl.c
+++ b/test/Sema/extern-redecl.c
@@ -33,3 +33,32 @@ void test3declarer() {
   extern int test3_array[];
   int x = sizeof(test3_array); // expected-error {{invalid application of 'sizeof' to an incomplete type 'int []'}}
 }
+
+void test4() {
+  extern int test4_array[];
+  {
+    extern int test4_array[100];
+    int x = sizeof(test4_array); // fine
+  }
+  int x = sizeof(test4_array); // expected-error {{invalid application of 'sizeof' to an incomplete type 'int []'}}
+}
+
+// Test that invalid local extern declarations of library
+// builtins behave reasonably.
+extern void abort(void); // expected-note 2 {{previous declaration is here}}
+extern float *calloc(); // expected-warning {{incompatible redeclaration of library function}} expected-note {{is a builtin}} expected-note 2 {{previous declaration is here}}
+void test5a() {
+  int abort(); // expected-error {{conflicting types}}
+  float *malloc(); // expected-warning {{incompatible redeclaration of library function}} expected-note 2 {{is a builtin}}
+  int *calloc(); // expected-error {{conflicting types}}
+}
+void test5b() {
+  int abort(); // expected-error {{conflicting types}}
+  float *malloc(); // expected-warning {{incompatible redeclaration of library function}}
+  int *calloc(); // expected-error {{conflicting types}}
+}
+void test5c() {
+  void (*_abort)(void) = &abort;
+  void *(*_malloc)() = &malloc;
+  float *(*_calloc)() = &calloc;
+}