Fix pointer addressing and array subscripting of Objective-C interface

types.
 - I broke this in the switch to representing interfaces with opaque
   types.

 - <rdar://problem/6822660> clang crashes on subscript of interface in
   32-bit mode


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70009 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 34 insertions, 0 deletions

diff --git a/test/CodeGenObjC/interface.m b/test/CodeGenObjC/interface.m
new file mode 100644
index 0000000000..d506e88ee7
--- /dev/null
+++ b/test/CodeGenObjC/interface.m
@@ -0,0 +1,34 @@
+// RUN: clang-cc -triple i386-apple-darwin9 -O3 -emit-llvm -o %t %s &&
+// RUN: grep 'ret i32 385' %t
+
+void *alloca();
+
+@interface I0 {
+@public
+  int iv0;
+  int iv1;
+  int iv2;
+}
+@end
+
+static int f0(I0 *a0) {
+  return (*(a0 + 2)).iv0;
+}
+
+static int f1(I0 *a0) {
+  return a0[2].iv1;
+}
+
+static int f2(I0 *a0) {
+  return (*(a0 - 1)).iv2;
+}
+
+int g0(void) {
+  I0 *a = alloca(sizeof(*a) * 4);
+  a[2].iv0 = 5;
+  a[2].iv1 = 7;
+  a[2].iv2 = 11;
+  return f0(a) * f1(a) * f2(&a[3]);
+}
+
+