From d8294401cd63a7d07641e469d3d3f485a29f3f0a Mon Sep 17 00:00:00 2001
From: James Hunsaker <hunsaker@spacetime.org>
Date: Fri, 25 Aug 2023 15:15:03 -0400
Subject: [PATCH] thread local secp256k1 context

---
 lib/silkpre/precompile.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/silkpre/precompile.cpp b/lib/silkpre/precompile.cpp
index a508de4..ac799e8 100644
--- a/lib/silkpre/precompile.cpp
+++ b/lib/silkpre/precompile.cpp
@@ -67,7 +67,7 @@ SilkpreOutput silkpre_ecrec_run(const uint8_t* input, size_t len) {
     }
 
     std::memset(out, 0, 12);
-    static secp256k1_context* context{secp256k1_context_create(SILKPRE_SECP256K1_CONTEXT_FLAGS)};
+    thread_local secp256k1_context* context{secp256k1_context_create(SILKPRE_SECP256K1_CONTEXT_FLAGS)};
     if (!silkpre_recover_address(out + 12, &d[0], &d[64], v != 27, context)) {
         return {out, 0};
     }