------- Comment #12 from pinskia at gcc dot gnu dot org 2005-10-17 04:46 ------- Subject: Re: [4.0/4.1 Regression] wrong "control reaches" warning with switches
On Oct 17, 2005, at 12:39 AM, ian at airs dot com wrote: > Fixing this in the middle-end will require a version of > remove_useless_stmts > which is clever enough to efficiently discard statements which follow > a return > statement. Andrew was working on that at one point; I don't recall > what the > status is. The status is that it will only be approved for 4.2 (this was decided by RTH). The problem is also comes into play with extra unreachable labels which was not going to be fixed by my patch and is what really causes this bug, rather than the stuff after a goto/return. We lower the eh before removing the unreachable label which causes us to think that there is a way to get fallthrough the switch. This means that we need a switch table for cleanup of the variable (the call to the dtor). -- Pinski -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20681
