Commit a89ad664 authored by Alexey Samsonov's avatar Alexey Samsonov
Browse files

[ASan] Fix __asan_describe_address and add a test for it. 

llvm-svn: 213583
parent d32803b6

compiler-rt/lib/asan/asan_report.cc

+3 −0
Original line number Diff line number Diff line
@@ -945,7 +945,10 @@ void NOINLINE __asan_set_error_report_callback(void (*callback)(const char*)) { 
}



void __asan_describe_address(uptr addr) {

  // Thread registry must be locked while we're describing an address.

  asanThreadRegistry().Lock();

  DescribeAddress(addr, 1);

  asanThreadRegistry().Unlock();

}



extern "C" {

compiler-rt/test/asan/TestCases/describe_address.cc

0 → 100644
+19 −0
Original line number Diff line number Diff line 
// RUN: %clangxx_asan -O0 %s -o %t && %run %t 2>&1 | FileCheck %s



#include <sanitizer/asan_interface.h>



int global;



int main(int argc, char *argv[]) {

  int stack;

  int *heap = new int[100];

  __asan_describe_address(heap);

  // CHECK: {{.*}} is located 0 bytes inside of 400-byte region

  // CHECK: allocated by thread T{{.*}} here

  __asan_describe_address(&stack);

  // CHECK: Address {{.*}} is located in stack of thread T{{.*}} at offset {{.*}}

  __asan_describe_address(&global);

  // CHECK: {{.*}} is located 0 bytes inside of global variable 'global'

  delete[] heap;

  return 0;

}