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more robust when printing error messages

This commit is contained in:
Roberto Ierusalimschy 2002-06-20 17:40:09 -03:00
parent e572dffa15
commit b449a5e574
1 changed files with 9 additions and 4 deletions
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13
lua.c
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@ -1,5 +1,5 @@
/* /*
** $Id: lua.c,v 1.91 2002/06/18 17:12:05 roberto Exp roberto $ ** $Id: lua.c,v 1.92 2002/06/18 17:43:49 roberto Exp roberto $
** Lua stand-alone interpreter ** Lua stand-alone interpreter
** See Copyright Notice in lua.h ** See Copyright Notice in lua.h
*/ */
@ -73,9 +73,14 @@ static void report (int status) {
lua_remove(L, -2); /* lease only traceback on stack */ lua_remove(L, -2); /* lease only traceback on stack */
} }
lua_getglobal(L, "_ALERT"); lua_getglobal(L, "_ALERT");
lua_pushvalue(L, -2); if (lua_isfunction(L, -1)) {
lua_pcall(L, 1, 0); lua_pushvalue(L, -2);
lua_pop(L, 1); lua_pcall(L, 1, 0);
}
else {
lua_pop(L, 1);
fprintf(stderr, "%s", lua_tostring(L, -1));
}
} }
} }