[PATCH] D46981: [asan] Restore check removed by r332033

[Walter Lee via Phabricator via llvm-commits]

This revision was automatically updated to reflect the committed changes.
Closed by commit rCRT332553: [asan] Restore check removed by r332033 (authored by waltl, committed by ).
Herald added a subscriber: Sanitizers.

Changed prior to commit:
  https://reviews.llvm.org/D46981?vs=147199&id=147213#toc

Repository:
  rCRT Compiler Runtime

https://reviews.llvm.org/D46981

Files:
  lib/asan/asan_thread.h


Index: lib/asan/asan_thread.h
===================================================================
--- lib/asan/asan_thread.h
+++ lib/asan/asan_thread.h
@@ -117,6 +117,8 @@
       return nullptr;
     if (atomic_load(&stack_switching_, memory_order_relaxed))
       return nullptr;
+    if (!has_fake_stack())
+      return AsyncSignalSafeLazyInitFakeStack();
     return fake_stack_;
   }
 


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