From: Mike Pall <mike>
Date: Mon, 28 Sep 2020 16:17:58 +0000 (+0200)
Subject: ARM64: Followup fix for exit branch patching.
X-Git-Tag: v2.1.ROLLING~224
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e67e2040be693122b54fc83797cdc9eb07221aea;p=thirdparty%2FLuaJIT.git

ARM64: Followup fix for exit branch patching.
---

diff --git a/src/lj_asm_arm64.h b/src/lj_asm_arm64.h
index 37b79cde..e80e1b41 100644
--- a/src/lj_asm_arm64.h
+++ b/src/lj_asm_arm64.h
@@ -2021,7 +2021,7 @@ void lj_asm_patchexit(jit_State *J, GCtrace *T, ExitNo exitno, MCode *target)
     *px = A64I_B | A64F_S26(delta);
     if (!cstart) cstart = px;
   }
-  lj_mcode_sync(cstart, px+1);
+  if (cstart) lj_mcode_sync(cstart, px+1);
   lj_mcode_patch(J, mcarea, 1);
 }