When sending a message to a receiver that has "unknown any" type,
force the unknown any type to "id" so that the message send can be
completed without requiring a case. Fixes <rdar://problem/10506646>.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@145552 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/SemaObjC/unknown-anytype.m b/test/SemaObjC/unknown-anytype.m
new file mode 100644
index 0000000..48eb91a
--- /dev/null
+++ b/test/SemaObjC/unknown-anytype.m
@@ -0,0 +1,24 @@
+// RUN: %clang_cc1 -funknown-anytype -fsyntax-only -fdebugger-support -verify %s
+
+extern __unknown_anytype test0;
+extern __unknown_anytype test1();
+
+@interface A
+- (int*)getIntPtr;
+- (double*)getSomePtr;
+@end
+
+@interface B
+- (float*)getFloatPtr;
+- (short*)getSomePtr;
+@end
+
+void test_unknown_anytype_receiver() {
+  int *ip = [test0 getIntPtr];
+  float *fp = [test1() getFloatPtr];
+  double *dp = [test1() getSomePtr]; // okay: picks first method found
+  [[test0 unknownMethod] otherUnknownMethod]; // expected-error{{no known method '-otherUnknownMethod'; cast the message send to the method's return type}}
+  (void)(int)[[test0 unknownMethod] otherUnknownMethod];;
+  [[test1() unknownMethod] otherUnknownMethod]; // expected-error{{no known method '-otherUnknownMethod'; cast the message send to the method's return type}}
+  (void)(id)[[test1() unknownMethod] otherUnknownMethod];
+}