[asan] Consume leading zeroes in a test

Author: vitalybuka

compiler-rt/test/asan/TestCases/debug_stacks.cpp

@@ -42,9 +42,9 @@ int main() {
   fprintf(stderr, "thread id = %d\n", thread_id);
   // CHECK: thread id = 0
   fprintf(stderr, "0x" PTR "\n", trace[0]);
-  // CHECK: [[ALLOC_FRAME_0:0x[0-9a-f]+]]
+  // CHECK: 0x{{0*}}[[ALLOC_FRAME_0:[0-9a-f]+]]
   fprintf(stderr, "0x" PTR "\n", trace[1]);
-  // CHECK: [[ALLOC_FRAME_1:0x[0-9a-f]+]]
+  // CHECK: 0x{{0*}}[[ALLOC_FRAME_1:[0-9a-f]+]]
 
   num_frames = 100;
   num_frames = __asan_get_free_stack(mem, trace, num_frames, &thread_id);
@@ -55,20 +55,20 @@ int main() {
   fprintf(stderr, "thread id = %d\n", thread_id);
   // CHECK: thread id = 0
   fprintf(stderr, "0x" PTR "\n", trace[0]);
-  // CHECK: [[FREE_FRAME_0:0x[0-9a-f]+]]
+  // CHECK: 0x{{0*}}[[FREE_FRAME_0:[0-9a-f]+]]
   fprintf(stderr, "0x" PTR "\n", trace[1]);
-  // CHECK: [[FREE_FRAME_1:0x[0-9a-f]+]]
+  // CHECK: 0x{{0*}}[[FREE_FRAME_1:[0-9a-f]+]]
 
   mem[0] = 'A'; // BOOM
 
   // CHECK: ERROR: AddressSanitizer: heap-use-after-free
   // CHECK: WRITE of size 1 at 0x{{.*}}
   // CHECK: freed by thread T0 here:
-  // CHECK: #0 [[FREE_FRAME_0]]
-  // CHECK: #1 [[FREE_FRAME_1]]
+  // CHECK: #0 0x{{0*}}[[FREE_FRAME_0]]
+  // CHECK: #1 0x{{0*}}[[FREE_FRAME_1]]
   // CHECK: previously allocated by thread T0 here:
-  // CHECK: #0 [[ALLOC_FRAME_0]]
-  // CHECK: #1 [[ALLOC_FRAME_1]]
+  // CHECK: #0 0x{{0*}}[[ALLOC_FRAME_0]]
+  // CHECK: #1 0x{{0*}}[[ALLOC_FRAME_1]]
 
   return 0;
 }