1 files changed, 53 insertions, 0 deletions
diff --git a/gcc/testsuite/objc.dg/objc-gc-3.m b/gcc/testsuite/objc.dg/objc-gc-3.m
new file mode 100644
index 00000000000..217c00b8c2d
--- /dev/null
+++ b/gcc/testsuite/objc.dg/objc-gc-3.m
@@ -0,0 +1,53 @@
+/* APPLE LOCAL file ObjC GC */
+/* A run-time test for insertion of write barriers. */
+/* { dg-do run { target *-*-darwin* } } */
+/* { dg-options "-fnext-runtime -fobjc-gc" } */
+
+#include <objc/objc.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+// callouts to these are generated with cc -fobjc-gc
+
+int IvarAssigns;
+
+id objc_assign_ivar(id value, id dest, unsigned int offset) {
+    id *slot = (id*) ((char *)dest + offset);
+
+    ++IvarAssigns;
+    return (*slot = value);
+}
+
+// The test case elements;
+@class NSObject;
+
+@interface Foo  {
+@public
+// assignments to any/all of these fields should generate objc_assign_ivar
+    Foo *obj[20];
+    short idx[5];
+}
+@end
+
+int testIvars() {
+    Foo *foo = (Foo *)calloc(1,sizeof(Foo)); // don't call in ObjC
+    int counter = 0, errors = 0;
+    #define ASSIGNTEST(expr, global) expr = foo; if (!global) { printf(# expr " is busted\n"); ++errors; }  global = 0;
+
+    ASSIGNTEST(foo->obj[5], IvarAssigns)		// objc_assign_ivar
+    ASSIGNTEST(foo->obj[++counter], IvarAssigns)	// objc_assign_ivar
+    foo->idx[++counter] = 15;
+    ASSIGNTEST(foo->obj[foo->idx[2]], IvarAssigns)	// objc_assign_ivar
+
+    if (foo->obj[5] != foo || foo->obj[1] != foo || foo->obj[15] != foo) 
+      abort();
+ 
+    return errors;
+}
+
+@implementation Foo
+@end
+
+int main(int argc, char *argv[]) {
+    return testIvars();
+}