[Bug other/53615] Buffer overflow in the compiler?

[gjl at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53615

--- Comment #7 from Georg-Johann Lay <gjl at gcc dot gnu.org> 2012-08-02 16:45:24 UTC ---
(In reply to comment #6)
> You should run the compiler under Valgrind and see whether it complains.

I never built the compiler with valgrind support.  Is the a comprehensible
documentation?

The wiki has http://gcc.gnu.org/wiki/DebuggingGCC to use valgring as wrapper,
but I also see many valgrind strings in GCC sources and some in gcc/doc.
You mean --enable-checking=valgrind?

This bug does no more appear since PR53595 is fixed.  This is strange; maybe
it's just incidental and now some other test case is needed to trigger this
bug.
Or one bug is actually a duplicate if the other?