Messages in this thread | | | From | Linus Torvalds <> | Date | Wed, 13 Jan 2021 14:08:09 -0800 | Subject | Re: [PATCH] compiler.h: Raise minimum version of GCC to 5.1 for arm64 |
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On Wed, Jan 13, 2021 at 1:44 PM Russell King - ARM Linux admin <linux@armlinux.org.uk> wrote: > > So, maybe the Sparc issue was just a similar but different bug in gcc > 4.9.x.
Good catch. And I know this bug has happened independently on different architectures several times (I remember this on x86-64 as well), so I started looking around.
And in fact, 4.9 was buggy on x86-64 too:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61904
And yeah, _that_ gcc bug wasn't actually x86-64 specific, but apparently a generic instruction scheduling bug.
So it's an independent bug, but I do have to admit that the arguments against 4.9 are piling up (even if that particular fix apparently got fixed in the gcc branches and apparently backported to distro compilers too).
Linus
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