Date: Mon, 31 Mar 2003 04:17:07 -0800 (PST) From: David Schultz <das@FreeBSD.org> To: dan@obluda.cz, das@FreeBSD.org, freebsd-bugs@FreeBSD.org Subject: Re: bin/40209: __dtoa broken with -O2 or -O3 optimisation Message-ID: <200303311217.h2VCH7gP020127@freefall.freebsd.org>
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Synopsis: __dtoa broken with -O2 or -O3 optimisation State-Changed-From-To: open->closed State-Changed-By: das State-Changed-When: Mon Mar 31 04:11:31 PST 2003 State-Changed-Why: This problem is due to the fact that gcc3 with -fstrict-aliasing does not produce the intended output for code that violates C's aliasing rules. Seems to happen only for quantities > 32-bits. The new version of dtoa() imported a few weeks ago does not violate C's aliasing rules and seems to work properly. I do not intend to MFC this code, but then again, the old code works fine with gcc2. http://www.freebsd.org/cgi/query-pr.cgi?pr=40209
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