1 files changed, 90 insertions, 0 deletions
diff --git a/clang/test/SemaObjC/sizeof-interface.m b/clang/test/SemaObjC/sizeof-interface.m
new file mode 100644
index 0000000..7304b6c
--- /dev/null
+++ b/clang/test/SemaObjC/sizeof-interface.m
@@ -0,0 +1,90 @@
+// RUN: %clang_cc1 -verify -fsyntax-only -Wno-objc-root-class %s
+
+@class I0; // expected-note 2{{forward declaration of class here}}
+
+// rdar://6811884
+int g0 = sizeof(I0); // expected-error{{invalid application of 'sizeof' to an incomplete type 'I0'}}
+
+// rdar://6821047
+void *g3(I0 *P) {
+  P = P+5;        // expected-error {{arithmetic on a pointer to an incomplete type 'I0'}}
+
+  return &P[4];   // expected-error{{expected method to read array element not found on object of type 'I0 *'}}
+}
+
+
+
+@interface I0 {
+@public
+  char x[4];
+}
+
+@property int p0;
+@end
+
+// size == 4
+int g1[ sizeof(I0)     // expected-error {{invalid application of 'sizeof' to interface 'I0' in non-fragile ABI}}
+       == 4 ? 1 : -1];
+
+@implementation I0
+@synthesize p0 = _p0;
+@end
+
+// size == 4 (we do not include extended properties in the
+// sizeof).
+int g2[ sizeof(I0)   // expected-error {{invalid application of 'sizeof' to interface 'I0' in non-fragile ABI}}
+       == 4 ? 1 : -1];
+
+@interface I1
+@property int p0;
+@end
+
+@implementation I1
+@synthesize p0 = _p0;
+@end
+
+typedef struct { @defs(I1); } I1_defs; // expected-error {{invalid application of @defs in non-fragile ABI}}
+
+// FIXME: This is currently broken due to the way the record layout we
+// create is tied to whether we have seen synthesized properties. Ugh.
+// int g3[ sizeof(I1) == 0 ? 1 : -1];
+
+// rdar://6821047
+int bar(I0 *P) {
+  P = P+5;  // expected-error {{arithmetic on pointer to interface 'I0', which is not a constant size in non-fragile ABI}}
+  P = 5+P;  // expected-error {{arithmetic on pointer to interface 'I0', which is not a constant size in non-fragile ABI}}
+  P = P-5;  // expected-error {{arithmetic on pointer to interface 'I0', which is not a constant size in non-fragile ABI}}
+  
+  return P[4].x[2];  // expected-error {{expected method to read array element not found on object of type 'I0 *'}}
+}
+
+
+@interface I @end
+
+@interface XCAttributeRunDirectNode
+{
+    @public
+    unsigned long attributeRuns[1024 + sizeof(I)]; // expected-error {{invalid application of 'sizeof' to interface 'I' in non-fragile ABI}}
+    int i;
+}
+@end
+
+@implementation XCAttributeRunDirectNode
+
+- (unsigned long)gatherStats:(id )stats
+{
+        return attributeRuns[i];
+}
+@end
+
+
+@interface Foo @end
+
+int foo()
+{
+  Foo *f;
+  
+  // Both of these crash clang nicely
+  ++f; 	// expected-error {{arithmetic on pointer to interface 'Foo', which is not a constant size in non-fragile ABI}}
+  --f; 	// expected-error {{arithmetic on pointer to interface 'Foo', which is not a constant size in non-fragile ABI}}
+}