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ensure that reader function cannot yield during parsing

This commit is contained in:
Roberto Ierusalimschy 2009-11-17 14:46:44 -02:00
parent 35fa276099
commit 2d5931ebc8
1 changed files with 3 additions and 1 deletions
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4
ldo.c
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@ -1,5 +1,5 @@
/*
** $Id: ldo.c,v 2.70 2009/10/23 19:12:19 roberto Exp roberto $
** $Id: ldo.c,v 2.71 2009/11/17 16:33:38 roberto Exp roberto $
** Stack and Call structure of Lua
** See Copyright Notice in lua.h
*/
@ -589,12 +589,14 @@ static void f_parser (lua_State *L, void *ud) {
int luaD_protectedparser (lua_State *L, ZIO *z, const char *name) {
struct SParser p;
int status;
L->nny++; /* cannot yield during parsing */
p.z = z; p.name = name;
p.varl.actvar = NULL; p.varl.nactvar = p.varl.actvarsize = 0;
luaZ_initbuffer(L, &p.buff);
status = luaD_pcall(L, f_parser, &p, savestack(L, L->top), L->errfunc);
luaZ_freebuffer(L, &p.buff);
luaM_freearray(L, p.varl.actvar, p.varl.actvarsize);
L->nny--;
return status;
}