Date: Sat, 22 Mar 2008 19:39:32 +0100 From: Kris Kennaway <kris@FreeBSD.org> To: Mikael Ikivesi <mikael.ikivesi@pp.inet.fi> Cc: freebsd-stable@freebsd.org Subject: Re: gcc -O2 error Message-ID: <47E55264.2030004@FreeBSD.org> In-Reply-To: <20080322192433.3719eb44@pp.inet.fi> References: <20080322192433.3719eb44@pp.inet.fi>
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Mikael Ikivesi wrote: > Hi > > I am running uptodate RELENG_7. It has gcc (GCC) 4.2.1 20070719 > [FreeBSD]. > > I tried to track down segfaults from my code and I accidentaly found a > optimization error. Code did not segfault when compiled without > optimization but crashed when -O2 was used. > > I tried to track it I could make the gcc give me following error by > simply stripping few lines: > > ----------------------- > wrong.c: In function 'wrong': > wrong.c:11: error: Attempt to delete prologue/epilogue insn: > (insn/f 47 46 48 2 (set (mem:SI (plus:SI (reg/f:SI 6 bp) > (const_int -8 [0xfffffffffffffff8])) [0 S4 A8]) > (reg:SI 3 bx)) -1 (nil) > (nil)) > wrong.c:11: internal compiler error: in propagate_one_insn, at > flow.c:1735 Please submit a full bug report, > with preprocessed source if appropriate. > See <URL:http://gcc.gnu.org/bugs.html>; for instructions. So, did you consider perhaps following this advice? ;-) Kris
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