From: otto <otto@openbsd.org>
Date: Sat, 20 Feb 2021 19:03:28 +0000 (+0000)
Subject: Make the unwind cache tread-safe by declaring it thread_local. Solves
X-Git-Url: http://artulab.com/gitweb/?a=commitdiff_plain;h=6f07627ae6451a5a24759a8d2c86ad5083189ddb;p=openbsd

Make the unwind cache tread-safe by declaring it thread_local. Solves
segfaults seen on exception handling.  ok kettenis@
---

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.