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From: | Stefan Monnier |
Subject: | Re: My Emacs unicode 2 crash again when I do some *Replace String (M-%)*, I give the debug informations under gdb in the attachments. |
Date: | Thu, 08 Mar 2007 02:19:41 -0500 |
User-agent: | Gnus/5.11 (Gnus v5.11) Emacs/22.0.93 (gnu/linux) |
> I couldn't convince GCC developers that debuggability is much more > important in the vast majority of cases than the extra 5%-7% > performance gains one gets by using all the tweaks -O2 does that > defeat debugging. Sigh. I haven't followed any of gcc's development, but I do have to point out that keeping track of source-line numbers through all compilation and optimization phases is tremendously difficult and tiresome, even for relatively simple optimizations. And then designing/understanding/generating/using debug info is itself a challenge. So if you want reliable debuggability, avoid optimizations. Stefan
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