https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66563

--- Comment #26 from John Paul Adrian Glaubitz <glaubitz at physik dot 
fu-berlin.de> ---
(In reply to Oleg Endo from comment #25)
> I don't know the code of mpfr.  It could use __builtin_strlen for stuff like
> parsing numbers etc.  However, the builtin_strlen code looks OK and hasn't
> been causing trouble elsewhere.  So I guess that it just runs on broken data
> and then causes a buffer overrun.  In other words, the actual bug is
> somewhere else -- a quite common scenario for segfault class of bugs.

>From my current observations it seems that many packages seem to be affected
and all were compiled with the new compiler (with the patches since December).

I'm currently trying to localize the issue with procps which is also affected.
I'm doing a build with gcc-4.9_4.9.2-21 now which is svn r224436.

Adrian

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