[PATCH] D83247: [compiler-rt][asan][hwasan] Refactor shadow setup into sanitizer_common (NFCI)

Thu Jul 16 14:06:43 PDT 2020

tejohnson added a comment.

In D83247#2156950 <https://reviews.llvm.org/D83247#2156950>, @aeubanks wrote:

> Hi, I think this is breaking our Android bots: https://crbug.com/1106482
>
> FAILED: lib/hwasan/CMakeFiles/RTHwasan.aarch64.dir/hwasan_dynamic_shadow.cpp.o 
>  /b/s/w/ir/cache/builder/src/third_party/llvm-build/Release+Asserts/bin/clang++  -DHWASAN_WITH_INTERCEPTORS=1 -I/b/s/w/ir/cache/builder/src/third_party/llvm/compiler-rt/lib/hwasan/.. --target=aarch64-linux-android21 --sysroot=/b/s/w/ir/cache/builder/src/third_party/android_ndk/toolchains/llvm/prebuilt/linux-x86_64/sysroot --gcc-toolchain=/b/s/w/ir/cache/builder/src/third_party/android_ndk/toolchains/llvm/prebuilt/linux-x86_64 -Wall -std=c++14 -Wno-unused-parameter -O3 -DNDEBUG    -fPIC -fno-builtin -fno-exceptions -fomit-frame-pointer -funwind-tables -fno-stack-protector -fno-sanitize=safe-stack -fvisibility=hidden -fno-lto -O3 -gline-tables-only -Wno-gnu -Wno-variadic-macros -Wno-c99-extensions -Wno-non-virtual-dtor -fno-rtti -fPIC -ffreestanding -MD -MT lib/hwasan/CMakeFiles/RTHwasan.aarch64.dir/hwasan_dynamic_shadow.cpp.o -MF lib/hwasan/CMakeFiles/RTHwasan.aarch64.dir/hwasan_dynamic_shadow.cpp.o.d -o lib/hwasan/CMakeFiles/RTHwasan.aarch64.dir/hwasan_dynamic_shadow.cpp.o -c /b/s/w/ir/cache/builder/src/third_party/llvm/compiler-rt/lib/hwasan/hwasan_dynamic_shadow.cpp
>  /b/s/w/ir/cache/builder/src/third_party/llvm/compiler-rt/lib/hwasan/hwasan_dynamic_shadow.cpp:63:3: error: use of undeclared identifier 'UnmapFromTo'
>
>   UnmapFromTo(shadow_start + shadow_size, shadow_start + premap_shadow_size);

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