1 files changed, 78 insertions, 0 deletions
diff --git a/test/SemaObjC/conditional-expr-4.m b/test/SemaObjC/conditional-expr-4.m
new file mode 100644
index 0000000..7d50ba6
--- /dev/null
+++ b/test/SemaObjC/conditional-expr-4.m
@@ -0,0 +1,78 @@
+// RUN: clang-cc -fsyntax-only %s
+// XFAIL
+// <rdar://problem/6212771>
+
+#define nil ((void*) 0)
+
+@interface A 
+@property int x;
+@end
+
+@interface B : A
+@end
+
+// Basic checks...
+id f0(int cond, id a, void *b) {
+  return cond ? a : b;
+}
+A *f0_a(int cond, A *a, void *b) {
+  return cond ? a : b;
+}
+
+id f1(int cond, id a) {
+  return cond ? a : nil;
+}
+A *f1_a(int cond, A *a) {
+  return cond ? a : nil;
+}
+
+// Check interaction with qualified id
+
+@protocol P0 @end
+
+id f2(int cond, id<P0> a, void *b) {
+  return cond ? a : b;
+}
+
+id f3(int cond, id<P0> a) {
+  return cond ? a : nil;
+}
+
+// Check that result actually has correct type.
+
+// Using properties is one way to find the compiler internal type of a
+// conditional expression. Simple assignment doesn't work because if
+// the type is id then it can be implicitly promoted.
+@protocol P1
+@property int x;
+@end
+
+int f5(int cond, id<P1> a, id<P1> b) {
+  // This should result in something with id type, currently. This is
+  // almost certainly wrong and should be fixed.
+  return (cond ? a : b).x; // expected-error {{member reference base type ('id') is not a structure or union}}
+}
+int f5_a(int cond, A *a, A *b) {
+  return (cond ? a : b).x;
+}
+int f5_b(int cond, A *a, B *b) {
+  return (cond ? a : b).x;
+}
+
+int f6(int cond, id<P1> a, void *b) {
+  // This should result in something with id type, currently.
+  return (cond ? a : b).x; // expected-error {{member reference base type ('id') is not a structure or union}}
+}
+
+int f7(int cond, id<P1> a) {
+  return (cond ? a : nil).x;
+}
+
+int f8(int cond, id<P1> a, A *b) {
+  // GCC regards this as a warning (comparison of distinct Objective-C types lacks a cast)
+  return a == b; // expected-error {{invalid operands to binary expression}}
+}
+
+int f9(int cond, id<P1> a, A *b) {
+  return (cond ? a : b).x; // expected-error {{incompatible operand types}}
+}