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pal1000 9c45a18af7 util: Fix use of undeclared identifier 'NULL' in src/util/os_misc.h when compiling with clang 
Fixes: 2771eb39fd ("util: Add function os_unset_option/os_set_option for latter use")

Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/14805

```
FAILED: [code=1] src/util/libmesa_util.a.p/u_process.c.obj
"cc" "-Isrc/util/libmesa_util.a.p" "-Isrc/util" "-I../../src/util" "-Iinclude" "-I../../include" "-Isrc" "-I../../src" "-Isrc/util/format" "-I../../src/util/format" "-IC:/msys64/clang64/bin/../include" "-fvisibility=hidden" "-fdiagnostics-color=always" "-D_FILE_OFFSET_BITS=64" "-Wall" "-Winvalid-pch" "-std=c11" "-O2" "-g" "-D__STDC_CONSTANT_MACROS" "-D__STDC_FORMAT_MACROS" "-D__STDC_LIMIT_MACROS" "-DPACKAGE_VERSION=\"26.0.0-rc3\"" "-DPACKAGE_BUGREPORT=\"https://gitlab.freedesktop.org/mesa/mesa/-/issues\"" "-DHAVE_OPENGL=1" "-DHAVE_OPENGL_ES_1=1" "-DHAVE_OPENGL_ES_2=1" "-DHAVE_SOFTPIPE" "-DHAVE_LLVMPIPE" "-DHAVE_ZINK" "-DHAVE_D3D12" "-DHAVE_VIRGL" "-DHAVE_SWRAST" "-DMESA_SYSTEM_HAS_KMS_DRM=0" "-DVIDEO_CODEC_VC1DEC=1" "-DVIDEO_CODEC_H264DEC=1" "-DVIDEO_CODEC_H264ENC=1" "-DVIDEO_CODEC_H265DEC=1" "-DVIDEO_CODEC_H265ENC=1" "-DVIDEO_CODEC_AV1DEC=1" "-DVIDEO_CODEC_AV1ENC=1" "-DVIDEO_CODEC_VP9DEC=1" "-DVIDEO_CODEC_MPEG12DEC=1" "-DVIDEO_CODEC_JPEGDEC=1" "-DHAVE_WINDOWS_PLATFORM" "-DHAVE_SURFACELESS_PLATFORM" "-DUSE_LIBGLVND=0" "-DUSE_D3D12_PREVIEW_HEADERS=0" "-DHAVE_GALLIUM_D3D12_VIDEO" "-DHAVE_VA_SURFACE_ATTRIB_DRM_FORMAT_MODIFIERS" "-DGLAPI_EXPORT_PROTO_ENTRY_POINTS=1" "-DALLOW_KCMP" "-DMESA_DEBUG=0" "-DHAVE___BUILTIN_BSWAP32" "-DHAVE___BUILTIN_BSWAP64" "-DHAVE___BUILTIN_CLZ" "-DHAVE___BUILTIN_CLZLL" "-DHAVE___BUILTIN_CTZ" "-DHAVE___BUILTIN_EXPECT" "-DHAVE___BUILTIN_FFS" "-DHAVE___BUILTIN_FFSLL" "-DHAVE___BUILTIN_POPCOUNT" "-DHAVE___BUILTIN_POPCOUNTLL" "-DHAVE___BUILTIN_UNREACHABLE" "-DHAVE___BUILTIN_TYPES_COMPATIBLE_P" "-DHAVE___BUILTIN_ADD_OVERFLOW" "-DHAVE_FUNC_ATTRIBUTE_CONST" "-DHAVE_FUNC_ATTRIBUTE_FLATTEN" "-DHAVE_FUNC_ATTRIBUTE_MALLOC" "-DHAVE_FUNC_ATTRIBUTE_PURE" "-DHAVE_FUNC_ATTRIBUTE_UNUSED" "-DHAVE_FUNC_ATTRIBUTE_WARN_UNUSED_RESULT" "-DHAVE_FUNC_ATTRIBUTE_WEAK" "-DHAVE_FUNC_ATTRIBUTE_FORMAT" "-DHAVE_FUNC_ATTRIBUTE_PACKED" "-DHAVE_FUNC_ATTRIBUTE_RETURNS_NONNULL" "-DHAVE_FUNC_ATTRIBUTE_ALIAS" "-DHAVE_FUNC_ATTRIBUTE_NORETURN" "-DHAVE_FUNC_ATTRIBUTE_COLD" "-DHAVE_FUNC_ATTRIBUTE_VISIBILITY" "-DHAVE_UINT128" "-D_WIN32_WINNT=0x0A00" "-DWINVER=0x0A00" "-D_GNU_SOURCE" "-DUSE_SSE41" "-DHAVE___BUILTIN_IA32_CLFLUSHOPT" "-DUSE_GCC_ATOMIC_BUILTINS" "-DHAS_SCHED_H" "-DHAVE_DLFCN_H" "-DHAVE_CET_H" "-DHAVE_STRTOF" "-DHAVE_STRTOK_R" "-DHAVE_QSORT_S" "-DHAVE_STRUCT_TIMESPEC" "-DHAVE_ZLIB" "-DHAVE_ZSTD" "-DHAVE_COMPRESSION" "-DWIN32_LEAN_AND_MEAN" "-DWINDOWS_NO_FUTEX" "-DMESA_LLVM_VERSION_STRING=\"21.1.8\"" "-DLLVM_IS_SHARED=0" "-DDRAW_LLVM_AVAILABLE=1" "-DAMD_LLVM_AVAILABLE=1" "-DGALLIVM_USE_ORCJIT=0" "-DHAVE_SPIRV_TOOLS" "-DUSE_LIBELF" "-DTHREAD_SANITIZER=0" "-DHAVE_RENDERDOC_INTEGRATION=false" "-Werror=implicit-function-declaration" "-Werror=missing-prototypes" "-Werror=return-type" "-Werror=empty-body" "-Werror=incompatible-pointer-types" "-Werror=int-conversion" "-Wimplicit-fallthrough" "-Wmisleading-indentation" "-Wno-missing-field-initializers" "-Wno-format-truncation" "-fno-math-errno" "-fno-trapping-math" "-Qunused-arguments" "-fno-common" "-Wno-unknown-pragmas" "-Wno-microsoft-enum-value" "-Wno-unused-function" "-Werror=thread-safety" "-ffunction-sections" "-fdata-sections" "-pipe" "-Wp,-D_FORTIFY_SOURCE=2" "-fstack-protector-strong" "-Wp,-D__USE_MINGW_ANSI_STDIO=1" "-march=core2" "-Werror=pointer-arith" "-Werror=vla" "-Werror=gnu-empty-initializer" "-Wgnu-pointer-arith" -MD -MQ src/util/libmesa_util.a.p/u_process.c.obj -MF "src/util/libmesa_util.a.p/u_process.c.obj.d" -o src/util/libmesa_util.a.p/u_process.c.obj "-c" ../../src/util/u_process.c
In file included from ../../src/util/u_process.c:28:
../../src/util/os_misc.h:151:24: error: use of undeclared identifier 'NULL'
  151 |    os_set_option(name, NULL, true);
      |                        ^~~~
1 error generated.

```
Reviewed-by: Erik Faye-Lund <erik.faye-lund@collabora.com>

Reviewed-by: Yonggang Luo <luoyonggang@gmail.com>
(cherry picked from commit 128dc57436)

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/40752>
2026-04-01 11:45:32 +02:00
.ci-farms Revert "ci: lima farm maintenance" 2026-02-11 15:51:45 +01:00
.ci-farms-disabled Revert "ci: lima farm maintenance" 2026-02-11 15:51:45 +01:00
.github/workflows meson: remove unused osmesa option 2025-06-23 06:42:50 +00:00
.gitlab docs: update gitlab docs urls 2025-02-23 00:31:59 +01:00
.gitlab-ci ci: disable debian-ppc64el and debian-s390x 2026-03-11 23:21:08 +01:00
.marge/hooks ci: pipeline_message: reset empty errors 2025-01-07 05:08:10 +00:00
android android: fix building rules for i915, r300 2025-10-08 23:43:33 +02:00
bin pick-ui: add Backport-to: * as a synonym to Cc: mesa-stable 2026-02-25 14:22:19 +01:00
build-support meson: move tsan-blacklist.txt to build-support with the other build support files 2024-05-01 07:05:12 +00:00
docs docs: add sha sum for 26.0.3 2026-03-18 17:25:12 +01:00
include Revert "renderdoc: Add Haiku platform support" 2026-01-07 09:08:46 +00:00
licenses licenses: add missing licenses 2025-01-08 20:37:51 +00:00
src util: Fix use of undeclared identifier 'NULL' in src/util/os_misc.h when compiling with clang 2026-04-01 11:45:32 +02:00
subprojects meson: specify minimal target meson version for rust subprojects 2025-12-12 17:28:49 +00:00
.clang-format meson: Restore .clang-format for ninja clang-format target 2026-02-04 18:39:34 +01:00
.clang-format-ignore ci: enforce formatting for RADV & ACO 2023-06-16 19:59:52 +00:00
.clang-format-include ethos: Initial commit of a driver for the Arm Ethos-U65 NPU. 2025-10-15 20:10:15 +00:00
.dir-locals.el
.editorconfig editorconfig: Set for glsl files 2025-11-14 19:31:17 +00:00
.git-blame-ignore-revs radv: Add re-format commit to .git-blame-ignore-revs 2025-11-12 07:55:36 +00:00
.gitattributes gitlab: Highlight .cl as C 2023-11-02 11:37:46 +00:00
.gitignore intel/mda: Add code to produce mesa debug archives 2025-09-24 23:08:45 -07:00
.gitlab-ci.yml ci: changing .gitlab-ci.yml itself also means the container jobs must exist 2026-04-01 11:45:30 +02:00
.graphqlrc.yml
.mailmap mailmap: update my name and email 2025-11-03 22:08:48 +00:00
.mr-label-maker.yml mr-label-maker: tag src/virtio/virtgpu_kumquat* as part of gfxstream 2026-01-05 17:01:39 +00:00
.pick_status.json util: Fix use of undeclared identifier 'NULL' in src/util/os_misc.h when compiling with clang 2026-04-01 11:45:32 +02:00
.shellcheckrc ci: move shellcheck options to .shellcheckrc 2024-10-24 22:43:03 +00:00
clippy.toml ci: read the MSRV from clippy.toml to avoid having too many copies to keep in sync 2025-12-20 00:13:19 +01:00
CODEOWNERS CODEOWNERS: Add KosmicKrisp owners 2025-10-21 02:28:09 +00:00
meson.build clc: Fix static link with clang>=22 2026-04-01 11:45:32 +02:00
meson.options meson: add mpeg12dec as a video-codec 2026-01-20 22:42:08 +00:00
README.rst docs: Match README installation guide with meson.rst 2024-07-27 11:53:53 +00:00
rustfmt.toml mesa: Add rustfmt.toml 2024-11-18 22:29:14 +00:00
VERSION VERSION: bump for 26.0.3 2026-03-18 16:54:10 +01:00

README.rst 

`Mesa <https://mesa3d.org>`_ - The 3D Graphics Library
======================================================


Source
------

This repository lives at https://gitlab.freedesktop.org/mesa/mesa.
Other repositories are likely forks, and code found there is not supported.


Build & install
---------------

You can find more information in our documentation (`docs/install.rst
<https://docs.mesa3d.org/install.html>`_), but the recommended way is to use
Meson (`docs/meson.rst <https://docs.mesa3d.org/meson.html>`_):

.. code-block:: sh

  $ meson setup build
  $ ninja -C build/
  $ sudo ninja -C build/ install

Support
-------

Many Mesa devs hang on IRC; if you're not sure which channel is
appropriate, you should ask your question on `OFTC's #dri-devel
<irc://irc.oftc.net/dri-devel>`_, someone will redirect you if
necessary.
Remember that not everyone is in the same timezone as you, so it might
take a while before someone qualified sees your question.
To figure out who you're talking to, or which nick to ping for your
question, check out `Who's Who on IRC
<https://dri.freedesktop.org/wiki/WhosWho/>`_.

The next best option is to ask your question in an email to the
mailing lists: `mesa-dev\@lists.freedesktop.org
<https://lists.freedesktop.org/mailman/listinfo/mesa-dev>`_


Bug reports
-----------

If you think something isn't working properly, please file a bug report
(`docs/bugs.rst <https://docs.mesa3d.org/bugs.html>`_).


Contributing
------------

Contributions are welcome, and step-by-step instructions can be found in our
documentation (`docs/submittingpatches.rst
<https://docs.mesa3d.org/submittingpatches.html>`_).

Note that Mesa uses gitlab for patches submission, review and discussions.