[Bug gcov/profile/22324] profiling gcc build produces "Overflow merging"

["dariobirtic at gmx dot net" <gcc-bugzilla at gcc dot gnu dot org>]

------- Additional Comments From dariobirtic at gmx dot net  2005-07-06 18:57 -------
"profiledbootstrap" is not I was intending to do. "profiledbootstrap" although a
splendid idea is unfinished thing, it only profiles c compiler no matter what
languages are selected in the --enable-languages switch. And that it does on a
small number of test samples (libgcc only).

While PR 12786 is somewhat related, it doesn't relate directly to this. IMHO
this is clearly overflow bug, because of the cumulation of the data (take note
that it doesn't drop error message during whole compilation of the GCC compiler
including all supporting libraries, and drops error message just later in the
"make -k check" phase).

Another note, I have just made i686-pc-linux-gnu compiler on the same machine in
the chroot and repeated the steps described. It went without a glitch, and
second phase with -fprofile-use has used the profile data collected and created
working compiler (make -k check phase on the second phase generated compiler
produced expected results). That said, this is clearly x86_64-pc-linux-gnu
problem (maybe 32/64 bit counter overlook?).

Regards

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22324