Messages in this thread | | | Date | Sun, 22 Nov 2009 01:38:09 -0800 | Subject | Re: [PATCH][GIT PULL][v2.6.32] tracing/x86: Add check to detect GCC messing with mcount prologue | From | "H.J. Lu" <> |
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On Fri, Nov 20, 2009 at 11:35 AM, Andrew Haley <aph@redhat.com> wrote: > Steven Rostedt wrote: >> Ingo, Thomas and Linus, >> >> I know Thomas did a patch to force the -mtune=generic, but just in case >> gcc decides to do something crazy again, this patch will catch it. >> >> Should we try to get this in now? > > I'm sure this makes sense, but a gcc test case would be even better. > If this can be detected in the gcc test suite it'll be found and > fixed long before y'all in kernel land get to see it. That's the > only way to guarantee this never bothers you again. > > H.J., who wrote the code in question, is hopefully looking at why > this odd code is being generated. Once he's done I can put a > suitable test case in the gcc test suite. >
See:
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42109#c7
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