Here is a testcase that crashes GCC 4.6 -- typedef struct { float x; float y; } point; int test (id object) { point x; @synchronized (x) { return 1; } } The compiler is not checking the type of the argument of @synchronized() and is not dealing with unexpected types correctly. Thanks
Confirmed on trunk, 29 December 2010. Thanks
Author: nicola Date: Wed Dec 29 21:52:00 2010 New Revision: 168326 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=168326 Log: In gcc/objc/: 2010-12-29 Nicola Pero <nicola.pero@meta-innovation.com> PR objc/47118 * objc-act.c (objc_build_synchronized): Check the argument of @synchronized and emit an appropriate error if it is not a valid Objective-C object. Deal gracefully with that case. Updated comments and variable names. In gcc/testsuite/: 2010-12-29 Nicola Pero <nicola.pero@meta-innovation.com> PR objc/47118 * objc.dg/sync-3.m: New. * obj-c++.dg/sync-3.mm: New. Added: trunk/gcc/testsuite/obj-c++.dg/sync-3.mm trunk/gcc/testsuite/objc.dg/sync-3.m Modified: trunk/gcc/objc/ChangeLog trunk/gcc/objc/objc-act.c trunk/gcc/testsuite/ChangeLog
Fixed in trunk. Thanks