[llvm-branch-commits] [clang] [clang-tools-extra] [llvm] [compiler-rt] [sanitizer_symbolizer] Add end to end test for symbolizer markup. (PR #77702)

[Andres Villegas via llvm-branch-commits]

=?utf-8?q?Andrés?= Villegas <andresvi at google.com>,
=?utf-8?q?Andrés?= Villegas <andresvi at google.com>,
=?utf-8?q?Andrés?= Villegas <andresvi at google.com>
Message-ID:
In-Reply-To: <llvm.org/llvm/llvm-project/pull/77702 at github.com>


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@@ -0,0 +1,58 @@
+// REQUIRES: linux
+// RUN: rm -rf %t
+// RUN: mkdir -p %t/.build-id/12
+// RUN: %clangxx_tsan %s -Wl,--build-id=0x12345678 -O1 -o %t/main
+// RUN: cp %t/main %t/.build-id/12/345678.debug
+// RUN: %env_tsan_opts=enable_symbolizer_markup=1 %deflake %run %t/main >%t/sanitizer.out
+// RUN: llvm-symbolizer --filter-markup --debug-file-directory=%t < %t/sanitizer.out | FileCheck %s
+
+#include "test.h"
+
+int Global;
+
+[[gnu::noinline]] void foo1() { Global = 42; }
+
+[[gnu::noinline]] void bar1() {
+  volatile int tmp = 42;
+  int tmp2 = tmp;
+  (void)tmp2;
+  foo1();
+}
+
+[[gnu::noinline]] void foo2() {
+  volatile int tmp = Global;
+  int tmp2 = tmp;
+  (void)tmp2;
+}
+
+[[gnu::noinline]] void bar2() {
+  volatile int tmp = 42;
+  int tmp2 = tmp;
+  (void)tmp2;
+  foo2();
+}
+
+void *Thread1(void *x) {
+  barrier_wait(&barrier);
+  bar1();
+  return NULL;
+}
+
+int main() {
+  barrier_init(&barrier, 2);
+  pthread_t t;
+  pthread_create(&t, NULL, Thread1, NULL);
+  bar2();
+  barrier_wait(&barrier);
+  pthread_join(t, NULL);
+}
+
+//      CHECK: WARNING: ThreadSanitizer: data race
+//      CHECK:   Write of size 4 at {{.*}} by thread T1:
+//  CHECK-DAG:     #0 {{0x.*}} foo1{{.*}} {{.*}}simple_stack_symbolizer_markup.cpp:[[#@LINE - 39]]
+// CHECK-NEXT:     #1 {{0x.*}} bar1{{.*}} {{.*}}simple_stack_symbolizer_markup.cpp:[[#@LINE - 34]]
+// CHECK-NEXT:     #2 {{0x.*}} Thread1{{.*}} {{.*}}simple_stack_symbolizer_markup.cpp:[[#@LINE - 17]]
+//  CHECK-DAG:   Previous read of size 4 at {{.*}} by main thread:
+//  CHECK-DAG:     #0 {{0x.*}} foo2{{.*}} {{.*}}simple_stack_symbolizer_markup.cpp:[[#@LINE - 33]]
----------------
avillega wrote:

Not necessarily. Contextual elements might get emitted any time a call to print a non contextual element happens. So it is possible that in between `Previous read of size 4 at {{.*}} by main thread:` and `#0...` some contextual elements get printed.

https://github.com/llvm/llvm-project/pull/77702