Darwin: tolerate reordering using DAG group

Author: Cao-Wuhui

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

@@ -16,11 +16,11 @@ int main() {
   wchar_t badDst[9];
   wcscpy(badDst, start);
   fprintf(stderr, "Good so far.\n");
-  // CHECK: Good so far.
+  // CHECK-DAG: Good so far.
   fflush(stderr);
   wcscat(badDst, append); // Boom!
-  // CHECK: ERROR: AddressSanitizer: stack-buffer-overflow on address [[ADDR:0x[0-9a-f]+]] at pc {{0x[0-9a-f]+}} bp {{0x[0-9a-f]+}} sp {{0x[0-9a-f]+}}
-  // CHECK: WRITE of size {{[0-9]+}} at [[ADDR]] thread T0
-  // CHECK: #0 {{0x[0-9a-f]+}} in wcscat
+  // CHECK-DAG: ERROR: AddressSanitizer: stack-buffer-overflow on address [[ADDR:0x[0-9a-f]+]] at pc {{0x[0-9a-f]+}} bp {{0x[0-9a-f]+}} sp {{0x[0-9a-f]+}}
+  // CHECK-DAG: WRITE of size {{[0-9]+}} at [[ADDR]] thread T0
+  // CHECK-DAG: #0 {{0x[0-9a-f]+}} in wcscat
   printf("Should have failed with ASAN error.\n");
 }

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

@@ -13,11 +13,11 @@ int main() {
 
   wchar_t badDst[7];
   fprintf(stderr, "Good so far.\n");
-  // CHECK: Good so far.
+  // CHECK-DAG: Good so far.
   fflush(stderr);
   wcscpy(badDst, src); // Boom!
-  // CHECK: ERROR: AddressSanitizer: stack-buffer-overflow on address [[ADDR:0x[0-9a-f]+]] at pc {{0x[0-9a-f]+}} bp {{0x[0-9a-f]+}} sp {{0x[0-9a-f]+}}
-  // CHECK: WRITE of size {{[0-9]+}} at [[ADDR]] thread T0
-  // CHECK: #0 {{0x[0-9a-f]+}} in wcscpy
+  // CHECK-DAG: ERROR: AddressSanitizer: stack-buffer-overflow on address [[ADDR:0x[0-9a-f]+]] at pc {{0x[0-9a-f]+}} bp {{0x[0-9a-f]+}} sp {{0x[0-9a-f]+}}
+  // CHECK-DAG: WRITE of size {{[0-9]+}} at [[ADDR]] thread T0
+  // CHECK-DAG: #0 {{0x[0-9a-f]+}} in wcscpy
   printf("Should have failed with ASAN error.\n");
 }

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

@@ -17,11 +17,11 @@ int main() {
   wcscpy(badDst, start);
   wcsncat(badDst, append, 1);
   fprintf(stderr, "Good so far.\n");
-  // CHECK: Good so far.
+  // CHECK-DAG: Good so far.
   fflush(stderr);
   wcsncat(badDst, append, 3); // Boom!
-  // CHECK: ERROR: AddressSanitizer: stack-buffer-overflow on address [[ADDR:0x[0-9a-f]+]] at pc {{0x[0-9a-f]+}} bp {{0x[0-9a-f]+}} sp {{0x[0-9a-f]+}}
-  // CHECK: WRITE of size {{[0-9]+}} at [[ADDR]] thread T0
-  // CHECK: #0 {{0x[0-9a-f]+}} in wcsncat
+  // CHECK-DAG: ERROR: AddressSanitizer: stack-buffer-overflow on address [[ADDR:0x[0-9a-f]+]] at pc {{0x[0-9a-f]+}} bp {{0x[0-9a-f]+}} sp {{0x[0-9a-f]+}}
+  // CHECK-DAG: WRITE of size {{[0-9]+}} at [[ADDR]] thread T0
+  // CHECK-DAG: #0 {{0x[0-9a-f]+}} in wcsncat
   printf("Should have failed with ASAN error.\n");
 }

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

@@ -14,12 +14,11 @@ int main() {
   wchar_t badDst[7];
   wcsncpy(badDst, src, 7); // This should still work.
   fprintf(stderr, "Good so far.\n");
-  // CHECK: Good so far.
+  // CHECK-DAG: Good so far.
   fflush(stderr);
-
   wcsncpy(badDst, src, 15); // Boom!
-  // CHECK: ERROR: AddressSanitizer: stack-buffer-overflow on address [[ADDR:0x[0-9a-f]+]] at pc {{0x[0-9a-f]+}} bp {{0x[0-9a-f]+}} sp {{0x[0-9a-f]+}}
-  // CHECK: WRITE of size {{[0-9]+}} at [[ADDR]] thread T0
-  // CHECK: #0 {{0x[0-9a-f]+}} in wcsncpy
+  // CHECK-DAG: ERROR: AddressSanitizer: stack-buffer-overflow on address [[ADDR:0x[0-9a-f]+]] at pc {{0x[0-9a-f]+}} bp {{0x[0-9a-f]+}} sp {{0x[0-9a-f]+}}
+  // CHECK-DAG: WRITE of size {{[0-9]+}} at [[ADDR]] thread T0
+  // CHECK-DAG: #0 {{0x[0-9a-f]+}} in wcsncpy
   printf("Should have failed with ASAN error.\n");
 }