[PATCH] D58952: [llvm] Skip over empty line table entries.

Tue Mar 12 17:56:31 PDT 2019

vitalybuka added a comment.

Before the patch:

  =31747==ERROR: AddressSanitizer: stack-use-after-scope on address 0x007ffd652170 at pc 0x000135f69ae4 bp 0x007ffd6520a0 sp 0x007ffd652098
  READ of size 4 at 0x007ffd652170 thread T0
      #0 0x135f69ae0 in main::$_0::operator()() const /usr/local/google/home/vitalybuka/src/bbot/llvm/projects/compiler-rt/test/asan/TestCases/use-after-scope-capture.cc:11:14
      #1 0x135f69a90 in __invoke<(lambda at /usr/local/google/home/vitalybuka/src/bbot/llvm/projects/compiler-rt/test/asan/TestCases/use-after-scope-capture.cc:10:9) &> /usr/local/google/home/vitalybuka/src/bbot/android_ndk/standalone-aarch64/lib/gcc/aarch64-linux-android/4.9.x/../../../../include/c++/4.9.x/type_traits:4323:1
      #2 0x135f69a90 in int std::__ndk1::__invoke_void_return_wrapper<int>::__call<main::$_0&>(main::$_0&) /usr/local/google/home/vitalybuka/src/bbot/android_ndk/standalone-aarch64/lib/gcc/aarch64-linux-android/4.9.x/../../../../include/c++/4.9.x/__functional_base:318
      #3 0x135f699b8 in std::__ndk1::__function::__func<main::$_0, std::__ndk1::allocator<main::$_0>, int ()>::operator()() /usr/local/google/home/vitalybuka/src/bbot/android_ndk/standalone-aarch64/lib/gcc/aarch64-linux-android/4.9.x/../../../../include/c++/4.9.x/functional:1562:12
      #4 0x135f69b7c in std::__ndk1::function<int ()>::operator()() const /usr/local/google/home/vitalybuka/src/bbot/android_ndk/standalone-aarch64/lib/gcc/aarch64-linux-android/4.9.x/../../../../include/c++/4.9.x/functional:1924:12
      #5 0x135f693b0 in main /usr/local/google/home/vitalybuka/src/bbot/llvm/projects/compiler-rt/test/asan/TestCases/use-after-scope-capture.cc:16:10
      #6 0x7f836b88ec in __libc_init (/system/lib64/libc.so+0x1b8ec)
      #7 0x135f6926c in do_arm64_start (/data/local/tmp/Output/usr/local/google/home/vitalybuka/src/bbot/compiler_rt_build_android_aarch64/test/asan/AARCH64AndroidConfig/TestCases/Output/use-after-scope-capture.cc.tmp+0x126c)

After this patch:

  =================================================================
  ==29475==ERROR: AddressSanitizer: stack-use-after-scope on address 0x007fdb2866d0 at pc 0x000102b50ae4 bp 0x007fdb286600 sp 0x007fdb2865f8
  READ of size 4 at 0x007fdb2866d0 thread T0
      #0 0x102b50ae0 in main::$_0::operator()() const /usr/local/google/home/vitalybuka/src/bbot/android_ndk/standalone-aarch64/lib/gcc/aarch64-linux-android/4.9.x/../../../../include/c++/4.9.x/memory:2062
      #1 0x102b50a90 in __invoke<(lambda at /usr/local/google/home/vitalybuka/src/bbot/llvm/projects/compiler-rt/test/asan/TestCases/use-after-scope-capture.cc:10:9) &> /usr/local/google/home/vitalybuka/src/bbot/android_ndk/standalone-aarch64/lib/gcc/aarch64-linux-android/4.9.x/../../../../include/c++/4.9.x/type_traits:4323:1
      #2 0x102b50a90 in int std::__ndk1::__invoke_void_return_wrapper<int>::__call<main::$_0&>(main::$_0&) /usr/local/google/home/vitalybuka/src/bbot/android_ndk/standalone-aarch64/lib/gcc/aarch64-linux-android/4.9.x/../../../../include/c++/4.9.x/__functional_base:318
      #3 0x102b509b8 in std::__ndk1::__function::__func<main::$_0, std::__ndk1::allocator<main::$_0>, int ()>::operator()() /usr/local/google/home/vitalybuka/src/bbot/android_ndk/standalone-aarch64/lib/gcc/aarch64-linux-android/4.9.x/../../../../include/c++/4.9.x/functional:1562:12
      #4 0x102b50b7c in std::__ndk1::function<int ()>::operator()() const /usr/local/google/home/vitalybuka/src/bbot/android_ndk/standalone-aarch64/lib/gcc/aarch64-linux-android/4.9.x/../../../../include/c++/4.9.x/functional:1924:12
      #5 0x102b503b0 in main /usr/local/google/home/vitalybuka/src/bbot/llvm/projects/compiler-rt/test/asan/TestCases/use-after-scope-capture.cc:16:10
      #6 0x7fa5d658ec in __libc_init (/system/lib64/libc.so+0x1b8ec)
      #7 0x102b5026c in do_arm64_start (/data/local/tmp/Output/usr/local/google/home/vitalybuka/src/bbot/compiler_rt_build_android_aarch64/test/asan/AARCH64AndroidConfig/TestCases/Output/use-after-scope-capture.cc.tmp+0x126c)

  Address 0x007fdb2866d0 is located in stack of thread T0 at offset 112 in frame
      #0 0x102b50294 in main /usr/local/google/home/vitalybuka/src/bbot/llvm/projects/compiler-rt/test/asan/TestCases/use-after-scope-capture.cc:6

Repository:
  rL LLVM

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D58952/new/

https://reviews.llvm.org/D58952