https://bugs.freedesktop.org/show_bug.cgi?id=98308
--- Comment #14 from Marc Dietrich ---
ok, applying only -fanitize=address in src/gallium/drivers/llvmpipe only, also
fixes the problem.
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--- Comment #13 from Marc Dietrich ---
These options fail in src/mapi (fixable by removing them there), but later
they generate an internal compiler error, which I can't deal with. I attached
my build script. Maybe you can reproduce the bug.
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https://bugs.freedesktop.org/show_bug.cgi?id=98308
--- Comment #12 from Marc Dietrich ---
Created attachment 127454
--> https://bugs.freedesktop.org/attachment.cgi?id=127454&action=edit
build script
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--- Comment #11 from Maciej Cencora ---
I thought so. FWIW I cannot reproduce the crash on gcc 6.2.
Could you re-compile mesa with -fsanitize=address and -fsanitize=undefined in
C/CXX_FLAGS, and paste the output from glxgears run?
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--- Comment #10 from Marc Dietrich ---
this only fixes the (unrelated) warning in comment 5, but not the crash in
llvmpipe reported in this bug.
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--- Comment #9 from Maciej Cencora ---
Created attachment 127452
--> https://bugs.freedesktop.org/attachment.cgi?id=127452&action=edit
Proposed patch
Try this patch. It silences the warning for me on gcc-6.2, but I don't know if
that was actua
https://bugs.freedesktop.org/show_bug.cgi?id=98308
--- Comment #8 from Roland Scheidegger ---
(In reply to Marc Dietrich from comment #7)
> The warning in comment 5 seems to be unrelated. Instead, pushing
> "-fno-strict-aliasing" down to src/gallium/driver/llvmpipe/Makefile.am also
> works. -Wstr
https://bugs.freedesktop.org/show_bug.cgi?id=98308
--- Comment #7 from Marc Dietrich ---
The warning in comment 5 seems to be unrelated. Instead, pushing
"-fno-strict-aliasing" down to src/gallium/driver/llvmpipe/Makefile.am also
works. -Wstrict-aliasing produces no warnings there. I'll stop now.
https://bugs.freedesktop.org/show_bug.cgi?id=98308
--- Comment #6 from Roland Scheidegger ---
(In reply to Marc Dietrich from comment #4)
> bisection shows 88ad8c7de (mesa: Drop -fno-strict-aliasing) is the culprit.
> Adding -fno-strict-aliasing back, fixes the problem.
Ah yes that makes sense.
https://bugs.freedesktop.org/show_bug.cgi?id=98308
--- Comment #5 from Marc Dietrich ---
just stumbled upon:
CXXLDgallium_dri.la
../../src/compiler/nir/nir.h:1993:16: warning: type of 'nir_alu_instr_create'
does not match original declaration [-Wlto-type-mismatch]
nir/nir.c:445:16: note: '
https://bugs.freedesktop.org/show_bug.cgi?id=98308
--- Comment #4 from Marc Dietrich ---
bisection shows 88ad8c7de (mesa: Drop -fno-strict-aliasing) is the culprit.
Adding -fno-strict-aliasing back, fixes the problem.
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--- Comment #3 from Marc Dietrich ---
and I don't know how to deburg this further. Can you reproduce this? Btw.
src/mapi still needs to be compiled with -fno-lto when debug and glx-tls is
enabled.
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https://bugs.freedesktop.org/show_bug.cgi?id=98308
Marc Dietrich changed:
What|Removed |Added
Summary|llvmpipe crashes with |llvmpipe crashes with
https://bugs.freedesktop.org/show_bug.cgi?id=98308
--- Comment #2 from Roland Scheidegger ---
I'd be interested to know though why it fails, I don't think LTO should cause
such failures? Seems like it might be related to the threads created by
llvmpipe but I don't really see how.
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Marc Dietrich changed:
What|Removed |Added
Status|NEW |RESOLVED
Resolution|---
https://bugs.freedesktop.org/show_bug.cgi?id=98308
Bug ID: 98308
Summary: llvmpipe crashes with glxgears
Product: Mesa
Version: git
Hardware: Other
OS: All
Status: NEW
Severity: normal
Priority:
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