From 6f07627ae6451a5a24759a8d2c86ad5083189ddb Mon Sep 17 00:00:00 2001
From: otto <otto@openbsd.org>
Date: Sat, 20 Feb 2021 19:03:28 +0000
Subject: [PATCH] Make the unwind cache tread-safe by declaring it
 thread_local. Solves segfaults seen on exception handling.  ok kettenis@

---
 gnu/llvm/libunwind/src/UnwindCursor.hpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gnu/llvm/libunwind/src/UnwindCursor.hpp b/gnu/llvm/libunwind/src/UnwindCursor.hpp
index 31097b48fb3..8eb8d180777 100644
--- a/gnu/llvm/libunwind/src/UnwindCursor.hpp
+++ b/gnu/llvm/libunwind/src/UnwindCursor.hpp
@@ -75,7 +75,7 @@ extern "C" _Unwind_Reason_Code __libunwind_seh_personality(
 
 namespace libunwind {
 
-static UnwindInfoSectionsCache uwis_cache;
+static thread_local UnwindInfoSectionsCache uwis_cache;
 
 #if defined(_LIBUNWIND_SUPPORT_DWARF_UNWIND)
 /// Cache of recently found FDEs.
-- 
2.20.1