Torvalds & GCC 4.9

Jakub Jelinek jakub at
Sun Jul 27 07:11:32 UTC 2014

On Sat, Jul 26, 2014 at 11:32:49PM -0700, Chuck Forsberg WA7KGX wrote:
> is reporting that Linus has found a code generation
> error in 4.9 and has switched back to 4.8.

The bug existed from 4.5.0 up, so switching back to 4.8 is a weird

> Since Fedora has been including 4.9 in F21 for some time,
> one would like to know which compiler is used for compiling F21.

This bug is fixed in gcc-4.9.1-2.fc{21,22} already, and given that it has
been reported only after a few years since the bug has been introduced, it
is not very likely to trigger on other code.

> Caould some of the strange problems I've seen with F21 be
> caused by GCC 2.9 code generation error(s)???

Have you filed bugs if you suspect gcc problems?


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