linux-kernel - [next] clang: drivers/gpu/drm/i915/gt/intel_region_lmem.c:94:23: error: result of comparison of constant 4294967296 with expression of type 'resource_size_t' (aka 'unsigned int') is always false [-Werror,-Wtautological-constant-out-of-range-compare]

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Message-ID: <CA+G9fYuH+Jo3xFypJc8+F6juT783StO=oe0P9ZMMLE7nM0bQJg@mail.gmail.com>
Date:   Tue, 26 Jul 2022 12:28:29 +0530
From:   Naresh Kamboju <naresh.kamboju@...aro.org>
To:     Linux-Next Mailing List <linux-next@...r.kernel.org>,
        open list <linux-kernel@...r.kernel.org>,
        regressions@...ts.linux.dev, lkft-triage@...ts.linaro.org,
        clang-built-linux <clang-built-linux@...glegroups.com>
Cc:     Nirmoy Das <nirmoy.das@...el.com>,
        Matthew Auld <matthew.auld@...el.com>,
        Stephen Rothwell <sfr@...b.auug.org.au>,
        Nathan Chancellor <nathan@...nel.org>
Subject: [next] clang: drivers/gpu/drm/i915/gt/intel_region_lmem.c:94:23:
 error: result of comparison of constant 4294967296 with expression of type
 'resource_size_t' (aka 'unsigned int') is always false [-Werror,-Wtautological-constant-out-of-range-compare]

The Linux next-20220725 i386 clang builds failed due this build error,

Reported-by: Linux Kernel Functional Testing <lkft@...aro.org>

Regressions found on i386:

   - build-clang-11-defconfig
   - build-clang-14-lkftconfig
   - build-clang-13-defconfig
   - build-clang-12-defconfig
   - build-clang-13-lkftconfig
   - build-clang-12-lkftconfig
   - build-clang-14-defconfig

Steps to reproduce:
-------------------
tuxmake --runtime podman \
        --target-arch i386 \
        --toolchain clang-14 \
        --kconfig
https://builds.tuxbuild.com/2CQwgxqR0lJKwPMl2LxaDTNwsq0/config \
          LLVM=1 \
          LLVM_IAS=1

Build error log:
-----------------
make --silent --keep-going --jobs=8
O=/home/tuxbuild/.cache/tuxmake/builds/1/build LLVM=1 LLVM_IAS=1
ARCH=i386 CROSS_COMPILE=i686-linux-gnu- 'HOSTCC=sccache clang'
'CC=sccache clang'
drivers/gpu/drm/i915/gt/intel_region_lmem.c:94:23: error: result of
comparison of constant 4294967296 with expression of type
'resource_size_t' (aka 'unsigned int') is always false
[-Werror,-Wtautological-constant-out-of-range-compare]
                    root_res->start > 0x100000000ull)
                    ~~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~
1 error generated.
make[5]: *** [scripts/Makefile.build:250:
drivers/gpu/drm/i915/gt/intel_region_lmem.o] Error 1
make[5]: Target '__build' not remade because of errors.


Build link:
https://builds.tuxbuild.com/2CQwgxqR0lJKwPMl2LxaDTNwsq0/


--
Linaro LKFT
https://lkft.linaro.org