From: kernel test robot <lkp@intel.com>
To: Nick Terrell <terrelln@fb.com>
Cc: llvm@lists.linux.dev, kbuild-all@lists.01.org,
Linux Memory Management List <linux-mm@kvack.org>
Subject: [linux-next:master 12781/13683] lib/zstd/compress/zstd_compress_superblock.c:413:12: error: variable 'litLengthSum' set but not used
Date: Fri, 12 Nov 2021 03:58:21 +0800 [thread overview]
Message-ID: <202111120312.833wII4i-lkp@intel.com> (raw)
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tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head: ad8be4fa6e8149ba6ea21fdf0089e8254437b3c8
commit: de181b7198eac0e11f97b57d7be42286064b8c79 [12781/13683] lib: zstd: Upgrade to latest upstream zstd version 1.4.10
config: riscv-buildonly-randconfig-r004-20211111 (attached as .config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 63ef0e17e28827eae53133b3467bdac7d9729318)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# install riscv cross compiling tool for clang build
# apt-get install binutils-riscv64-linux-gnu
# https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=de181b7198eac0e11f97b57d7be42286064b8c79
git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
git fetch --no-tags linux-next master
git checkout de181b7198eac0e11f97b57d7be42286064b8c79
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=riscv
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
All errors (new ones prefixed by >>):
>> lib/zstd/compress/zstd_compress_superblock.c:413:12: error: variable 'litLengthSum' set but not used [-Werror,-Wunused-but-set-variable]
size_t litLengthSum = 0;
^
1 error generated.
vim +/litLengthSum +413 lib/zstd/compress/zstd_compress_superblock.c
407
408 static size_t ZSTD_seqDecompressedSize(seqStore_t const* seqStore, const seqDef* sequences, size_t nbSeq, size_t litSize, int lastSequence) {
409 const seqDef* const sstart = sequences;
410 const seqDef* const send = sequences + nbSeq;
411 const seqDef* sp = sstart;
412 size_t matchLengthSum = 0;
> 413 size_t litLengthSum = 0;
414 while (send-sp > 0) {
415 ZSTD_sequenceLength const seqLen = ZSTD_getSequenceLength(seqStore, sp);
416 litLengthSum += seqLen.litLength;
417 matchLengthSum += seqLen.matchLength;
418 sp++;
419 }
420 assert(litLengthSum <= litSize);
421 if (!lastSequence) {
422 assert(litLengthSum == litSize);
423 }
424 return matchLengthSum + litSize;
425 }
426
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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reply other threads:[~2021-11-11 19:58 UTC|newest]
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