X-Recipient:	archive-cygwin AT delorie DOT com
X-SWARE-Spam-Status:	No, hits=-1.7 required=5.0 tests=AWL,BAYES_00,RCVD_IN_DNSWL_NONE,T_RP_MATCHES_RCVD,UNPARSEABLE_RELAY
X-Spam-Check-By:	sourceware.org
Message-ID:	<4F2835F0.5050704@t-online.de>
Date:	Tue, 31 Jan 2012 19:41:52 +0100
From:	Christian Franke <Christian DOT Franke AT t-online DOT de>
User-Agent:	Mozilla/5.0 (Windows NT 6.1; WOW64; rv:7.0.1) Gecko/20110928 Firefox/7.0.1 SeaMonkey/2.4.1
MIME-Version:	1.0
To:	cygwin AT cygwin DOT com
Subject:	llvm/clang 3.0-1 silently ignores C++ exception handling
X-IsSubscribed:	yes
Mailing-List:	contact cygwin-help AT cygwin DOT com; run by ezmlm
List-Id:	<cygwin.cygwin.com>
List-Subscribe:	<mailto:cygwin-subscribe AT cygwin DOT com>
List-Archive:	<http://sourceware.org/ml/cygwin/>
List-Post:	<mailto:cygwin AT cygwin DOT com>
List-Help:	<mailto:cygwin-help AT cygwin DOT com>, <http://sourceware.org/ml/#faqs>
Sender:	cygwin-owner AT cygwin DOT com
Mail-Followup-To:	cygwin AT cygwin DOT com
Delivered-To:	mailing list cygwin AT cygwin DOT com

Clang++ 3.0-1 does not produce any exception handling code. Unwind 
tables and code within catch(.) {...} blocks are not generated. Throw 
always abort()s program.

$ cat trycatch.cc
void do_work();
void handle_error();

void func()
{
   try { do_work();  }
   catch (...) { handle_error(); }
}

$ clang++ -fexceptions -S trycatch.cc

$ grep handle_error trycatch.s

$ cat trycatch.s
...
__Z4funcv:
         pushl   %ebp
         movl    %esp, %ebp
         subl    $8, %esp
         calll   __Z7do_workv
         addl    $8, %esp
         popl    %ebp
         ret


$ g++ -S trycatch.cc

$ grep handle_error trycatch.s
         call    __Z12handle_errorv


Is this as excepted?

Christian


--
Problem reports:       http://cygwin.com/problems.html
FAQ:                   http://cygwin.com/faq/
Documentation:         http://cygwin.com/docs.html
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple

- Raw text -