[lsan] Run the leak detection tests under both ASan and LSan.

Change the LSan lit test logic. Now "check-lsan" tests the leak
checking functionality in both standalone LSan and ASan.

llvm-svn: 183000

1 files changed, 23 insertions, 0 deletions

diff --git a/compiler-rt/lib/lsan/lit_tests/TestCases/use_unaligned.cc b/compiler-rt/lib/lsan/lit_tests/TestCases/use_unaligned.cc
new file mode 100644
index 00000000000..75b90d60bd7
--- /dev/null
+++ b/compiler-rt/lib/lsan/lit_tests/TestCases/use_unaligned.cc
@@ -0,0 +1,23 @@
+// Test that unaligned pointers are detected correctly.
+// RUN: LSAN_BASE="report_blocks=1:use_stacks=0:use_registers=0"
+// RUN: %clangxx_lsan %s -o %t
+// RUN: LSAN_OPTIONS=$LSAN_BASE:"use_unaligned=0" %t 2>&1 | FileCheck %s
+// RUN: LSAN_OPTIONS=$LSAN_BASE:"use_unaligned=1" %t 2>&1
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+void *arr[2];
+
+int main() {
+  void *p = malloc(1337);
+  fprintf(stderr, "Test alloc: %p.\n", p);
+  char *char_arr = (char *)arr;
+  memcpy(char_arr + 1, &p, sizeof(p));
+  return 0;
+}
+// CHECK: Test alloc: [[ADDR:.*]].
+// CHECK: LeakSanitizer: detected memory leaks
+// CHECK: Directly leaked 1337 byte block at [[ADDR]]
+// CHECK: SUMMARY: LeakSanitizer: