Keep memory errors as memory errors

Allow memory errors to be raised through the API (throwing the
error with the memory error message); error in external allocations
raises a memory error; memory errors in coroutines are re-raised
as memory errors.

1 files changed, 5 insertions, 4 deletions

diff --git a/lcorolib.c b/lcorolib.c
index 7d6e585b..c165031d 100644
--- a/lcorolib.c
+++ b/lcorolib.c
@@ -73,11 +73,12 @@ static int luaB_coresume (lua_State *L) {
 static int luaB_auxwrap (lua_State *L) {
   lua_State *co = lua_tothread(L, lua_upvalueindex(1));
   int r = auxresume(L, co, lua_gettop(L));
-  if (r < 0) {
+  if (r < 0) {  /* error? */
     int stat = lua_status(co);
-    if (stat != LUA_OK && stat != LUA_YIELD)
-      lua_resetthread(co);  /* close variables in case of errors */
-    if (lua_type(L, -1) == LUA_TSTRING) {  /* error object is a string? */
+    if (stat != LUA_OK && stat != LUA_YIELD)  /* error in the coroutine? */
+      lua_resetthread(co);  /* close its tbc variables */
+    if (stat != LUA_ERRMEM &&  /* not a memory error and ... */
+        lua_type(L, -1) == LUA_TSTRING) {  /* ... error object is a string? */
       luaL_where(L, 1);  /* add extra info, if available */
       lua_insert(L, -2);
       lua_concat(L, 2);