Mailing List Archive: [Bug 3629] Building with Clang-17 fails due to -fzero-call-used-regs

[Bug 3629] Building with Clang-17 fails due to -fzero-call-used-regs

bugzilla-daemon at mindrot

Oct 19, 2023, 4:33 PM

Post #1 of 6 (169 views)

https://bugzilla.mindrot.org/show_bug.cgi?id=3629

Damien Miller <djm@mindrot.org> changed:

What |Removed |Added
----------------------------------------------------------------------------
CC| |djm@mindrot.org

--- Comment #1 from Damien Miller <djm@mindrot.org> ---
That looks like a compiler ICE. Please file a bug with the clang/llvm
project - I'm sure they would like to know that their compiler is
crashing.

Could you try editing the Makefile and changing
-fzero-call-used-regs=all to -fzero-call-used-regs=used and see if that
helper?

(maybe, having been burned by this before twice, we should make this
the default for this option?)

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[Bug 3629] Building with Clang-17 fails due to -fzero-call-used-regs [ In reply to ]

bugzilla-daemon at mindrot

Oct 19, 2023, 4:35 PM

Post #2 of 6 (169 views)

https://bugzilla.mindrot.org/show_bug.cgi?id=3629

Damien Miller <djm@mindrot.org> changed:

What |Removed |Added
----------------------------------------------------------------------------
CC| |morbo@google.com

--- Comment #2 from Damien Miller <djm@mindrot.org> ---
+Bill Wendling who looked at the last instance of this AFAIK

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[Bug 3629] Building with Clang-17 fails due to -fzero-call-used-regs [ In reply to ]

bugzilla-daemon at mindrot

Oct 19, 2023, 4:41 PM

Post #3 of 6 (169 views)

https://bugzilla.mindrot.org/show_bug.cgi?id=3629

--- Comment #3 from David Bohman <debohman@gmail.com> ---
(In reply to Damien Miller from comment #1)
> That looks like a compiler ICE. Please file a bug with the
> clang/llvm project - I'm sure they would like to know that their
> compiler is crashing.
>
> Could you try editing the Makefile and changing
> -fzero-call-used-regs=all to -fzero-call-used-regs=used and see if
> that helper?
>
> (maybe, having been burned by this before twice, we should make this
> the default for this option?)

Yes, I tried using the fix for Clang-15, but the problem persisted. I
modified the configure.ac to not use -fzero-call-used-regs at all for
Clang-17, and the project built successfully.

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[Bug 3629] Building with Clang-17 fails due to -fzero-call-used-regs [ In reply to ]

bugzilla-daemon at mindrot

Oct 20, 2023, 4:38 PM

Post #4 of 6 (168 views)

https://bugzilla.mindrot.org/show_bug.cgi?id=3629

--- Comment #4 from David Bohman <debohman@gmail.com> ---
Filed bug against clang
https://github.com/llvm/llvm-project/issues/69794.

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[Bug 3629] Building with Clang-17 fails due to -fzero-call-used-regs [ In reply to ]

bugzilla-daemon at mindrot

Oct 21, 2023, 12:29 AM

Post #5 of 6 (168 views)

https://bugzilla.mindrot.org/show_bug.cgi?id=3629

Darren Tucker <dtucker@dtucker.net> changed:

What |Removed |Added
----------------------------------------------------------------------------
CC| |dtucker@dtucker.net

--- Comment #5 from Darren Tucker <dtucker@dtucker.net> ---
(In reply to David Bohman from comment #3)
> Yes, I tried using the fix for Clang-15, but the problem persisted.
> I modified the configure.ac to not use -fzero-call-used-regs at all
> for Clang-17, and the project built successfully.

does -fzero-call-used-regs=used work? (as opposed to
-fzero-call-used-regs=all)

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[Bug 3629] Building with Clang-17 fails due to -fzero-call-used-regs [ In reply to ]

bugzilla-daemon at mindrot

Oct 21, 2023, 12:32 PM

Post #6 of 6 (167 views)

https://bugzilla.mindrot.org/show_bug.cgi?id=3629

--- Comment #6 from David Bohman <debohman@gmail.com> ---
(In reply to Darren Tucker from comment #5)
> (In reply to David Bohman from comment #3)
> > Yes, I tried using the fix for Clang-15, but the problem persisted.
> > I modified the configure.ac to not use -fzero-call-used-regs at all
> > for Clang-17, and the project built successfully.
>
> does -fzero-call-used-regs=used work? (as opposed to
> -fzero-call-used-regs=all)

No, I tried that before completely removing -fzero-call-used-regs.

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