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more freedom in handling memory-allocation errors (not all allocations

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automatically raise an error), which allows fixing a bug when resizing
a table.
This commit is contained in:
Roberto Ierusalimschy
2017-12-08 15:28:25 -02:00
parent 40f823ec90
commit e663a24ab0
8 changed files with 139 additions and 98 deletions
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14
lapi.c
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@@ -1,5 +1,5 @@
/*
** $Id: lapi.c,v 2.277 2017/11/23 19:29:04 roberto Exp roberto $
** $Id: lapi.c,v 2.278 2017/12/06 18:08:03 roberto Exp roberto $
** Lua API
** See Copyright Notice in lua.h
*/
@@ -99,16 +99,6 @@ static StkId index2stack (lua_State *L, int idx) {
}
/*
** to be called by 'lua_checkstack' in protected mode, to grow stack
** capturing memory errors
*/
static void growstack (lua_State *L, void *ud) {
int size = *(int *)ud;
luaD_growstack(L, size);
}
LUA_API int lua_checkstack (lua_State *L, int n) {
int res;
CallInfo *ci = L->ci;
@@ -121,7 +111,7 @@ LUA_API int lua_checkstack (lua_State *L, int n) {
if (inuse > LUAI_MAXSTACK - n) /* can grow without overflow? */
res = 0; /* no */
else /* try to grow stack */
res = (luaD_rawrunprotected(L, &growstack, &n) == LUA_OK);
res = luaD_growstack(L, n, 0);
}
if (res && ci->top < L->top + n)
ci->top = L->top + n; /* adjust frame top */