[PATCH] [compiler-rt] Add a symbolizer testcase for closed stdin/stdout

[Kuba Brecka]

Addressing review comments.


http://reviews.llvm.org/D7973

Files:
  test/asan/TestCases/closed-fds.cc

Index: test/asan/TestCases/closed-fds.cc
===================================================================
--- test/asan/TestCases/closed-fds.cc
+++ test/asan/TestCases/closed-fds.cc
@@ -0,0 +1,32 @@
+// Check that when the program closed its std(in|out|err), running the external
+// symbolizer still works.
+
+// RUN: rm -f %t.log.*
+// RUN: %clangxx_asan -O0 %s -o %t 2>&1 && ASAN_OPTIONS=log_path=%t.log:verbosity=2 \
+// RUN:   not %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-OUTPUT
+// RUN: FileCheck %s --check-prefix=CHECK-FILE < %t.log.*
+
+#include <assert.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+int main(int argc, char **argv) {
+  int result = fprintf(stderr, "Closing streams.\n");
+  assert(result > 0);
+  // CHECK-OUTPUT: Closing streams.
+  close(STDIN_FILENO);
+  close(STDOUT_FILENO);
+  close(STDERR_FILENO);
+  result = fprintf(stderr, "Can you hear me now?\n");
+  assert(result < 0);
+  char *x = (char *)malloc(10 * sizeof(char));
+  free(x);
+  x[argc] = 'X';  // BOOM
+  // CHECK-FILE: {{.*ERROR: AddressSanitizer: heap-use-after-free on address}}
+  // CHECK-FILE:   {{0x.* at pc 0x.* bp 0x.* sp 0x.*}}
+  // CHECK-FILE: {{WRITE of size 1 at 0x.* thread T0}}
+  // CHECK-FILE: {{    #0 0x.* in main .*closed-fds.cc:}}[[@LINE-4]]
+  return 0;
+}

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