Date: Mon, 19 Sep 2011 17:46:54 +0200 From: Roman Divacky <rdivacky@freebsd.org> To: Jason Harmening <jason.harmening@gmail.com> Cc: freebsd-current@freebsd.org Subject: Re: Crashes in world built w/ clang: FP registers? Message-ID: <20110919154654.GA35232@freebsd.org> In-Reply-To: <CAM=8qa=jkgYX1L_txCvJzPOtWjoSc3U=ZhY1Jpj0YU%2Bm97OsBQ@mail.gmail.com> References: <CAM=8qan5K6025J5oBT25s4fz9YgT15mp5SpNsEdzR0Fw%2BHVwig@mail.gmail.com> <20110917062309.GA82256@freebsd.org> <CAM=8qamT19pHEsD86hE-RSoW%2BWO63otm9O-0x2kJR7jhdhEF9g@mail.gmail.com> <20110917214448.GA87874@freebsd.org> <CAM=8qa=jkgYX1L_txCvJzPOtWjoSc3U=ZhY1Jpj0YU%2Bm97OsBQ@mail.gmail.com>
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On Sun, Sep 18, 2011 at 11:05:55AM -0500, Jason Harmening wrote: > > Can you try building just tcsh ? I wonder if -O0 makes any difference... > > > > in either case, can you give me preprocessed (clang -E) source that > > exhibits this bug (check with objdump -d that the unaligned sse read > > is there) and show me how to reproduce that... I'll try that here. > > > > > > To be honest, I am not sure why others are not seeing this behaviour :( > > > > roman > > > > Building w/ -O0 eliminated the crash in csh at least. In that case, > tw_collect() isn't even using the SSE registers. > I've attached the objdump output for csh for both the -O2 and -O0 > cases, along w/ the preprocessor output for tw.parse.c. it doesnt build for me.. with tons of errors like pes ~$ clang tw.parse.cpp In file included from ../../contrib/tcsh/tw.parse.c:1: In file included from ../../contrib/tcsh/tw.parse.c:36: In file included from ../../contrib/tcsh/sh.h:38: /usr/include/stddef.h:57:19: error: cannot combine with previous 'type-name' declaration specifier typedef __wchar_t wchar_t; ^ how did you get the preprocessed file? and/or how do you compile it? roman
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