Further downgrade -Warc-bridge-casts-disallowed-in-nonarc to a warning (not mapped to an error).  We can consider mapping it back to an error later.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@149670 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/clang/Basic/DiagnosticParseKinds.td b/include/clang/Basic/DiagnosticParseKinds.td
index 73d7883..b62335b 100644
--- a/include/clang/Basic/DiagnosticParseKinds.td
+++ b/include/clang/Basic/DiagnosticParseKinds.td
@@ -330,10 +330,10 @@
 let CategoryName = "ARC Parse Issue" in {
 def err_arc_bridge_retain : Error<
   "unknown cast annotation __bridge_retain; did you mean __bridge_retained?">;
+// To be default mapped to an error later.
 def err_arc_bridge_cast_nonarc : Warning<
   "'%0' casts are only allowed when using ARC">,
-  InGroup<DiagGroup<"arc-bridge-casts-disallowed-in-nonarc">>,
-  DefaultError;
+  InGroup<DiagGroup<"arc-bridge-casts-disallowed-in-nonarc">>;
 }
   
 def err_objc_illegal_visibility_spec : Error<
diff --git a/test/SemaObjC/illegal-nonarc-bridged-cast.m b/test/SemaObjC/illegal-nonarc-bridged-cast.m
index fe6b24a..6ff0f47 100644
--- a/test/SemaObjC/illegal-nonarc-bridged-cast.m
+++ b/test/SemaObjC/illegal-nonarc-bridged-cast.m
@@ -16,19 +16,19 @@
 NSString *CreateNSString();
 
 void from_cf() {
-  id obj1 = (__bridge_transfer id)CFCreateSomething(); // expected-error {{'__bridge_transfer' casts are only allowed when using ARC}}
-  id obj2 = (__bridge_transfer NSString*)CFCreateString(); // expected-error {{'__bridge_transfer' casts are only allowed when using ARC}}
-  (__bridge int*)CFCreateSomething();  // expected-error {{'__bridge' casts are only allowed when using ARC}}  \
+  id obj1 = (__bridge_transfer id)CFCreateSomething(); // expected-warning {{'__bridge_transfer' casts are only allowed when using ARC}}
+  id obj2 = (__bridge_transfer NSString*)CFCreateString(); // expected-warning {{'__bridge_transfer' casts are only allowed when using ARC}}
+  (__bridge int*)CFCreateSomething();  // expected-warning {{'__bridge' casts are only allowed when using ARC}}  \
                                        // expected-warning {{expression result unused}}
-  id obj3 = (__bridge id)CFGetSomething(); // expected-error {{'__bridge' casts are only allowed when using ARC}}
-  id obj4 = (__bridge NSString*)CFGetString(); // expected-error {{'__bridge' casts are only allowed when using ARC}}
+  id obj3 = (__bridge id)CFGetSomething(); // expected-warning {{'__bridge' casts are only allowed when using ARC}}
+  id obj4 = (__bridge NSString*)CFGetString(); // expected-warning {{'__bridge' casts are only allowed when using ARC}}
 }
 
 void to_cf(id obj) {
-  CFTypeRef cf1 = (__bridge_retained CFTypeRef)CreateSomething(); // expected-error {{'__bridge_retained' casts are only allowed when using ARC}}
-  CFStringRef cf2 = (__bridge_retained CFStringRef)CreateNSString(); // expected-error {{'__bridge_retained' casts are only allowed when using ARC}}
-  CFTypeRef cf3 = (__bridge CFTypeRef)CreateSomething(); // expected-error {{'__bridge' casts are only allowed when using ARC}}
-  CFStringRef cf4 = (__bridge CFStringRef)CreateNSString(); // expected-error {{'__bridge' casts are only allowed when using ARC}} 
+  CFTypeRef cf1 = (__bridge_retained CFTypeRef)CreateSomething(); // expected-warning {{'__bridge_retained' casts are only allowed when using ARC}}
+  CFStringRef cf2 = (__bridge_retained CFStringRef)CreateNSString(); // expected-warning {{'__bridge_retained' casts are only allowed when using ARC}}
+  CFTypeRef cf3 = (__bridge CFTypeRef)CreateSomething(); // expected-warning {{'__bridge' casts are only allowed when using ARC}}
+  CFStringRef cf4 = (__bridge CFStringRef)CreateNSString(); // expected-warning {{'__bridge' casts are only allowed when using ARC}} 
 }
 
 void fixits() {