[PATCH] Add -fsanitize=leak to driver options.

[Alexey Samsonov]

  LGTM with minor comment.


================
Comment at: test/Driver/sanitizer-ld.c:184
@@ +183,3 @@
+// CHECK-LSAN-ASAN-LINUX: libclang_rt.asan-x86_64
+// CHECK-LSAN-ASAN-LINUX: "-lpthread"
+// CHECK-LSAN-ASAN-LINUX-NOT: "-lstdc++"
----------------
Here you test that lsan and asan are not added to ld invocation together.
Please use:
CHECK: ld
CHECK-NOT: libclang_rt.lsan  // No lsan between "ld" and "asan"
CHECK: libclang_rt.asan
CHECK-NOT: libclang_rt.lsan  // No lsan after "asan"

You may drop pthread and lstdc++


http://llvm-reviews.chandlerc.com/D837

BRANCH
  feat/fsanitize_leak

ARCANIST PROJECT
  clang