obtained gcc-4.6.4.tar.bz2 from upstream website;upstream

verified gcc-4.6.4.tar.bz2.sig;
imported gcc-4.6.4 source tree from verified upstream tarball.

downloading a git-generated archive based on the 'upstream' tag
should provide you with a source tree that is binary identical
to the one extracted from the above tarball.

if you have obtained the source via the command 'git clone',
however, do note that line-endings of files in your working
directory might differ from line-endings of the respective
files in the upstream repository.

1 files changed, 44 insertions, 0 deletions

diff --git a/gcc/testsuite/objc.dg/proto-lossage-1.m b/gcc/testsuite/objc.dg/proto-lossage-1.m
new file mode 100644
index 000000000..2f7eb9861
--- /dev/null
+++ b/gcc/testsuite/objc.dg/proto-lossage-1.m
@@ -0,0 +1,44 @@
+/* Test for situations in which protocol conformance information
+   may be lost, leading to superfluous warnings.  */
+/* Author: Ziemowit Laski <zlaski@apple.com>.  */
+/* { dg-do compile } */
+
+/* One-line substitute for objc/objc.h */
+typedef struct objc_object { struct objc_class *class_pointer; } *id;
+
+@protocol NSObject
+- (int)someValue;
+@end
+
+@interface NSObject <NSObject>
+@end
+
+@protocol PlateMethods
+- (void)someMethod;
+@end
+
+@interface Foo {
+  NSObject <PlateMethods> *plate;
+  id <PlateMethods> plate1;
+  NSObject *plate2;
+}
+- (id <PlateMethods>) getPlate;
+- (id <NSObject>) getPlate1;
+- (int) getValue;
+@end
+
+@implementation Foo
+- (id <PlateMethods>) getPlate {
+  return plate;  /* { dg-bogus "does not implement" } */
+}
+- (id <NSObject>) getPlate1 {
+  return (id <NSObject>)plate1; /* { dg-bogus "does not conform" } */
+}
+- (int) getValue {
+  int i = [plate1 someValue];   /* { dg-warning ".\\-someValue. not found in protocol\\(s\\)" } */
+
+  int j = [(id <NSObject>)plate1 someValue];  /* { dg-bogus "not found in protocol" } */
+  int k = [(id)plate1 someValue]; /* { dg-bogus "not found in protocol" } */
+  return i + j + k;
+}
+@end