Support inline functions symbolization in Addr2Line symbolizer.

Patch by Maxim Ostapenko!

Summary:
Right now, Addr2Line symbolizer in asan_symbolize.py doesn't support inline functions symbolization. This might be a useful feature for using ASan on embedded systems.

Test results:

$ cat test.c

static inline void FooBarBaz() {
  __sanitizer_print_stack_trace();
}

int main() {
  FooBarBaz();
  return 0;
}

$ clang  test.c -fsanitize=address -g -O2 -o test.x && ./test.x &> /tmp/test.log
$ ./projects/compiler-rt/lib/asan/scripts/asan_symbolize.py  -l /tmp/test.log
    #0 0x42095e in __sanitizer_print_stack_trace _asan_rtl_
    #1 0x4cec07 in FooBarBaz /home/max/build/llvm/asan/test.c:4
    #2 0x4cec07 in main /home/max/build/llvm/asan/test.c:8
    #3 0x7f89f0891ec4 in __libc_start_main /build/buildd/eglibc-2.19/csu/libc-start.c:287

Reviewers: glider, samsonov

Subscribers: jevinskie, llvm-commits, ygribov

Differential Revision: http://reviews.llvm.org/D12153

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@247642 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 2 insertions, 1 deletions

diff --git a/lib/sanitizer_common/sanitizer_symbolizer_internal.h b/lib/sanitizer_common/sanitizer_symbolizer_internal.h
index ac9a5e4a7..12c70b602 100644
--- a/lib/sanitizer_common/sanitizer_symbolizer_internal.h
+++ b/lib/sanitizer_common/sanitizer_symbolizer_internal.h
@@ -88,10 +88,11 @@ class SymbolizerProcess {
     UNIMPLEMENTED();
   }
 
+  virtual bool ReadFromSymbolizer(char *buffer, uptr max_length);
+
  private:
   bool Restart();
   const char *SendCommandImpl(const char *command);
-  bool ReadFromSymbolizer(char *buffer, uptr max_length);
   bool WriteToSymbolizer(const char *buffer, uptr length);
   bool StartSymbolizerSubprocess();