Messages in this thread |  | | | Date | Thu, 19 Nov 2009 10:43:41 -0800 (PST) | | From | Linus Torvalds <> | | Subject | Re: BUG: GCC-4.4.x changes the function frame on some functions |
On Thu, 19 Nov 2009, Linus Torvalds wrote: > > Oh Gods, are we back to gcc people saying "sure, we do stupid things, but > it's allowed, so we don't consider it a bug because it doesn't matter that > real people care about real life, we only care about some paper, and real > life doesn't matter, if it's 'undefined' we can make our idiotic choices > regardless of what people need, and regardless of whether it actually > generates better code or not".
Put another way: the stack alignment itself may not be a bug, but gcc generating God-awful code for the mcount handling that results in problems in real life sure as hell is *stupid* enough to be called a bug.
I bet other people than just the kernel use the mcount hook for subtler things than just doing profiles. And even if they don't, the quoted code generation is just crazy _crap_.
Linus
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