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Accepting request 809200 from home:marxin:branches:X11:XOrg

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- Add add-lifetime-dse-fix.patch as a proper fix for boo#1171855.

OBS-URL: https://build.opensuse.org/request/show/809200
OBS-URL: https://build.opensuse.org/package/show/X11:XOrg/Mesa?expand=0&rev=958
This commit is contained in:
Stefan Dirsch 2020-05-27 15:38:22 +00:00 committed by Git OBS Bridge
parent 0773069549
commit eada45dd4f
3 changed files with 55 additions and 1 deletions
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5
Mesa-drivers.changes
View File

@ -1,3 +1,8 @@
-------------------------------------------------------------------
Tue May 19 19:22:02 UTC 2020 - Martin Liška <mliska@suse.cz>
- Add add-lifetime-dse-fix.patch as a proper fix for boo#1171855.
-------------------------------------------------------------------
Tue May 19 05:52:31 UTC 2020 - Martin Liška <mliska@suse.cz>

5
Mesa-drivers.spec
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@ -32,8 +32,9 @@
# Note that if you actually need to render something, you need the packages
# from Mesa-driver.
# Disable LTO for now boo#1171855
%ifarch armv6l armv6hl
%define _lto_cflags %{nil}
%endif
##### WARNING: please do not edit this auto generated spec file. Use the Mesa.spec! #####
%define drivers 1
@ -128,6 +129,7 @@ Source4: manual-pages.tar.bz2
Source6: %{name}-rpmlintrc
Source7: Mesa.keyring
Patch2: n_add-Mesa-headers-again.patch
Patch3: add-lifetime-dse-fix.patch
# never to be upstreamed
Patch54: n_drirc-disable-rgb10-for-chromium-on-amd.patch
Patch58: u_dep_xcb.patch
@ -735,6 +737,7 @@ programs against the XA state tracker.
rm -rf docs/README.{VMS,WIN32,OS2}
%patch2 -p1
%patch3 -p1
%patch54 -p1
%patch58 -p1

46
add-lifetime-dse-fix.patch Normal file
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@ -0,0 +1,46 @@
From 9a72afaea7bf69f07623cae1af99f71be64688ba Mon Sep 17 00:00:00 2001
From: Danylo Piliaiev <danylo.piliaiev@globallogic.com>
Date: Tue, 19 May 2020 20:35:49 +0300
Subject: [PATCH] meson: Disable GCC's dead store elimination for memory
zeroing custom new
Some classes use custom new operator which zeroes memory, however gcc does
aggressive dead-store elimination which threats all writes to the memory
before the constructor as "dead stores".
For now we disable this optimization.
The new operators in question are declared via:
DECLARE_RZALLOC_CXX_OPERATORS
DECLARE_LINEAR_ZALLOC_CXX_OPERATORS
The issue was found with lto builds, however there is no guarantee that
it didn't happen with ordinary ones.
CC: <mesa-stable@lists.freedesktop.org>
Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/2977
Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/1358
Signed-off-by: Danylo Piliaiev <danylo.piliaiev@globallogic.com>
---
meson.build | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/meson.build b/meson.build
index 1a207842c55..3d4ea165c99 100644
--- a/meson.build
+++ b/meson.build
@@ -980,6 +980,11 @@ else
'-fno-math-errno',
'-fno-trapping-math',
'-Qunused-arguments',
+ # Some classes use custom new operator which zeroes memory, however
+ # gcc does aggressive dead-store elimination which threats all writes
+ # to the memory before the constructor as "dead stores".
+ # For now we disable this optimization.
+ '-flifetime-dse=1',
]
# MinGW chokes on format specifiers and I can't get it all working
if not (cc.get_id() == 'gcc' and host_machine.system() == 'windows')
--
2.26.2