[PATCH] D150870: [lld][Arm] Big Endian - Byte invariant support.

Tue Jun 20 09:26:47 PDT 2023

hctim added a comment.

Hi, looks like this broke the sanitizer buildbots: https://lab.llvm.org/buildbot/#/builders/5/builds/34555/steps/10/logs/stdio

Full instructions on how to reproduce the bot can be found here: https://github.com/google/sanitizers/wiki/SanitizerBotReproduceBuild. The script used in that bit is `buildbot_fast.sh`.

In saying that, you should be able to reproduce quicker by using:

  $ cmake \
  -DLLVM_ENABLE_ASSERTIONS=ON \
  -DCMAKE_C_COMPILER=clang \
  -DCMAKE_CXX_COMPILER=clang++ \
  -DLLVM_USE_LINKER=lld \
  -GNinja \
  -DCMAKE_BUILD_TYPE=Release \
  -DCMAKE_C_FLAGS="-fsanitize=undefined" \
  -DCMAKE_CXX_FLAGS="-fsanitize=undefined" \
  -DLLVM_ENABLE_PROJECTS="'clang;lld;libc'" \
  -DLLVM_ENABLE_RUNTIMES="libcxx;libcxxabi" \
  -DLLVM_LIBC_ENABLE_LINTING=OFF \
  -DLLVM_USE_SANITIZER=Undefined \
  /path/to/llvm/llvm
  $ LIT_OPTS='--filter arm-data-relocs.s' ninja check-lld

  ******************** TEST 'lld :: ELF/arm-data-relocs.s' FAILED ********************
  Script:
  --
  : 'RUN: at line 2';   /b/sanitizer-x86_64-linux-fast/build/llvm_build_asan_ubsan/bin/llvm-mc -filetype=obj -triple=armv7a-none-linux-gnueabi /b/sanitizer-x86_64-linux-fast/build/llvm-project/lld/test/ELF/arm-data-relocs.s -o /b/sanitizer-x86_64-linux-fast/build/llvm_build_asan_ubsan/tools/lld/test/ELF/Output/arm-data-relocs.s.tmp.o
  : 'RUN: at line 3';   /b/sanitizer-x86_64-linux-fast/build/llvm_build_asan_ubsan/bin/llvm-mc -filetype=obj -triple=armv7a-none-linux-gnueabi /b/sanitizer-x86_64-linux-fast/build/llvm-project/lld/test/ELF/Inputs/abs256.s -o /b/sanitizer-x86_64-linux-fast/build/llvm_build_asan_ubsan/tools/lld/test/ELF/Output/arm-data-relocs.s.tmp256.o
  : 'RUN: at line 4';   /b/sanitizer-x86_64-linux-fast/build/llvm_build_asan_ubsan/bin/ld.lld /b/sanitizer-x86_64-linux-fast/build/llvm_build_asan_ubsan/tools/lld/test/ELF/Output/arm-data-relocs.s.tmp.o /b/sanitizer-x86_64-linux-fast/build/llvm_build_asan_ubsan/tools/lld/test/ELF/Output/arm-data-relocs.s.tmp256.o -o /b/sanitizer-x86_64-linux-fast/build/llvm_build_asan_ubsan/tools/lld/test/ELF/Output/arm-data-relocs.s.tmp
  : 'RUN: at line 5';   /b/sanitizer-x86_64-linux-fast/build/llvm_build_asan_ubsan/bin/llvm-objdump -s /b/sanitizer-x86_64-linux-fast/build/llvm_build_asan_ubsan/tools/lld/test/ELF/Output/arm-data-relocs.s.tmp | /b/sanitizer-x86_64-linux-fast/build/llvm_build_asan_ubsan/bin/FileCheck /b/sanitizer-x86_64-linux-fast/build/llvm-project/lld/test/ELF/arm-data-relocs.s --check-prefixes=CHECK,LE
  : 'RUN: at line 7';   /b/sanitizer-x86_64-linux-fast/build/llvm_build_asan_ubsan/bin/llvm-mc -filetype=obj -triple=armv7aeb-none-linux-gnueabi /b/sanitizer-x86_64-linux-fast/build/llvm-project/lld/test/ELF/arm-data-relocs.s -o /b/sanitizer-x86_64-linux-fast/build/llvm_build_asan_ubsan/tools/lld/test/ELF/Output/arm-data-relocs.s.tmp.be.o
  : 'RUN: at line 8';   /b/sanitizer-x86_64-linux-fast/build/llvm_build_asan_ubsan/bin/llvm-mc -filetype=obj -triple=armv7aeb-none-linux-gnueabi /b/sanitizer-x86_64-linux-fast/build/llvm-project/lld/test/ELF/Inputs/abs256.s -o /b/sanitizer-x86_64-linux-fast/build/llvm_build_asan_ubsan/tools/lld/test/ELF/Output/arm-data-relocs.s.tmp256.be.o
  : 'RUN: at line 9';   /b/sanitizer-x86_64-linux-fast/build/llvm_build_asan_ubsan/bin/ld.lld /b/sanitizer-x86_64-linux-fast/build/llvm_build_asan_ubsan/tools/lld/test/ELF/Output/arm-data-relocs.s.tmp.be.o /b/sanitizer-x86_64-linux-fast/build/llvm_build_asan_ubsan/tools/lld/test/ELF/Output/arm-data-relocs.s.tmp256.be.o -o /b/sanitizer-x86_64-linux-fast/build/llvm_build_asan_ubsan/tools/lld/test/ELF/Output/arm-data-relocs.s.tmp.be
  : 'RUN: at line 10';   /b/sanitizer-x86_64-linux-fast/build/llvm_build_asan_ubsan/bin/llvm-objdump -s /b/sanitizer-x86_64-linux-fast/build/llvm_build_asan_ubsan/tools/lld/test/ELF/Output/arm-data-relocs.s.tmp.be | /b/sanitizer-x86_64-linux-fast/build/llvm_build_asan_ubsan/bin/FileCheck /b/sanitizer-x86_64-linux-fast/build/llvm-project/lld/test/ELF/arm-data-relocs.s --check-prefixes=CHECK,BE
  : 'RUN: at line 12';   /b/sanitizer-x86_64-linux-fast/build/llvm_build_asan_ubsan/bin/ld.lld --be8 /b/sanitizer-x86_64-linux-fast/build/llvm_build_asan_ubsan/tools/lld/test/ELF/Output/arm-data-relocs.s.tmp.be.o /b/sanitizer-x86_64-linux-fast/build/llvm_build_asan_ubsan/tools/lld/test/ELF/Output/arm-data-relocs.s.tmp256.be.o -o /b/sanitizer-x86_64-linux-fast/build/llvm_build_asan_ubsan/tools/lld/test/ELF/Output/arm-data-relocs.s.tmp.be8
  : 'RUN: at line 13';   /b/sanitizer-x86_64-linux-fast/build/llvm_build_asan_ubsan/bin/llvm-objdump -s /b/sanitizer-x86_64-linux-fast/build/llvm_build_asan_ubsan/tools/lld/test/ELF/Output/arm-data-relocs.s.tmp.be8 | /b/sanitizer-x86_64-linux-fast/build/llvm_build_asan_ubsan/bin/FileCheck /b/sanitizer-x86_64-linux-fast/build/llvm-project/lld/test/ELF/arm-data-relocs.s --check-prefixes=CHECK,BE
  --
  Exit Code: 1
  Command Output (stderr):
  --
  /b/sanitizer-x86_64-linux-fast/build/llvm-project/llvm/include/llvm/ADT/DenseMap.h:656:46: runtime error: applying non-zero offset 696 to null pointer
  SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior /b/sanitizer-x86_64-linux-fast/build/llvm-project/llvm/include/llvm/ADT/DenseMap.h:656:46 in 

Repository:
  rG LLVM Github Monorepo

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