From cb370239d589b837e9a079e6f7e5808e3f20003f Mon Sep 17 00:00:00 2001
From: jyelon <jyelon@gmail.com>
Date: Tue, 4 Apr 2023 15:50:06 -0400
Subject: [PATCH] First step in making Lua use exceptions properly

---
 luprex/ext/eris-master/src/ldo.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/luprex/ext/eris-master/src/ldo.c b/luprex/ext/eris-master/src/ldo.c
index 1117d8f4..f85a1856 100644
--- a/luprex/ext/eris-master/src/ldo.c
+++ b/luprex/ext/eris-master/src/ldo.c
@@ -50,9 +50,12 @@
 
 #if defined(__cplusplus) && !defined(LUA_USE_LONGJMP)
 /* C++ exceptions */
-#define LUAI_THROW(L,c)		throw(c)
+class LuaException {};
+#define LUAI_THROW(L,c)		throw(LuaException())
+// Do not call the lua interpreter inside a try-catch block.  If you do,
+// the intepreter state could be corrupted.
 #define LUAI_TRY(L,c,a) \
-	try { a } catch(...) { if ((c)->status == 0) (c)->status = -1; }
+try { a } catch(LuaException e) { if ((c)->status == 0) (c)->status = -1; }
 #define luai_jmpbuf		int  /* dummy variable */
 
 #elif defined(LUA_USE_ULONGJMP)