Date: Thu, 27 Dec 2012 09:15:01 -0600 From: Nathan Whitehorn <nwhitehorn@freebsd.org> To: freebsd-current@freebsd.org Subject: Re: clang 3.2 RC2 miscompiles libgcc? Message-ID: <50DC65F5.6060004@freebsd.org> In-Reply-To: <20121227150724.GA1431@mole.fafoe.narf.at> References: <20121227150724.GA1431@mole.fafoe.narf.at>
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On 12/27/12 09:07, Stefan Farfeleder wrote: > Hi, > > I noticed that most of my C++ applications in recent versions of FreeBSD > head suddenly crash without me recompiling them. I tracked it down to > r243830 which imported a new clang version. The new clang seems to > compile libgcc in a wrong or at least incompatible way with what gcc > expects. In fact, the breakage only occurs with libgcc compiled by a > post-r243830 clang and an application compiled with g++ -O2. For me, the > crash happens with boost::program_options, but I'm not sure if that is > necessary for the crash. I've seen what I think is the same thing due to a miscompilation of unwind-dw2.c that caused crashes related to cross-shared-object exception handling. It seems to have been fixed with the 3.2 release but I haven't tested it too thoroughly yet. -Nathan
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