[PATCH] D37635: Prevent DCE on __lsan_is_turned_off and re-enable test case

[Francis Ricci via Phabricator via llvm-commits]

fjricci created this revision.

-dead_strip in ld64 strips weak interface symbols, which I believe
is most likely the cause of this test failure. Re-enable after marking the interface
function as used.


https://reviews.llvm.org/D37635

Files:
  test/lsan/TestCases/link_turned_off.cc


Index: test/lsan/TestCases/link_turned_off.cc
===================================================================
--- test/lsan/TestCases/link_turned_off.cc
+++ test/lsan/TestCases/link_turned_off.cc
@@ -3,15 +3,13 @@
 // RUN: %clangxx_lsan %s -o %t
 // RUN: %env_lsan_opts=$LSAN_BASE %run %t
 // RUN: %env_lsan_opts=$LSAN_BASE not %run %t foo 2>&1 | FileCheck %s
-//
-// UNSUPPORTED: darwin
 
 #include <sanitizer/lsan_interface.h>
 
 int argc_copy;
 
 extern "C" {
-int __lsan_is_turned_off() {
+int __attribute__((used)) __lsan_is_turned_off() {
   return (argc_copy == 1);
 }
 }


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