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print error on stderr when _ALERT is not defined

This commit is contained in:
Roberto Ierusalimschy 2002-10-22 15:07:55 -03:00
parent 81bc5711a8
commit 11886dc7b0
1 changed files with 9 additions and 4 deletions
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13
lauxlib.c
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@ -1,5 +1,5 @@
/*
** $Id: lauxlib.c,v 1.87 2002/10/04 14:31:40 roberto Exp roberto $
** $Id: lauxlib.c,v 1.88 2002/10/16 20:41:35 roberto Exp roberto $
** Auxiliary functions for building Lua libraries
** See Copyright Notice in lua.h
*/
@ -422,9 +422,14 @@ LUALIB_API int luaL_loadbuffer (lua_State *L, const char *buff, size_t size,
static void callalert (lua_State *L, int status) {
if (status != 0) {
lua_getglobal(L, "_ALERT");
lua_insert(L, -2);
lua_call(L, 1, 0);
lua_pop(L, 1);
if (lua_isfunction(L, -1)) {
lua_insert(L, -2);
lua_call(L, 1, 0);
}
else { /* no _ALERT function; print it on stderr */
fprintf(stderr, "%s\n", lua_tostring(L, -2));
lua_pop(L, 2); /* remove error message and _ALERT */
}
}
}