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Manual: errors in lua_toclose are not memory errors

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This commit is contained in:
Roberto Ierusalimschy
2024-05-23 09:55:26 -03:00
parent 262dc5729a
commit cbdf4969ec
3 changed files with 6 additions and 3 deletions
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2
lauxlib.c
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@@ -951,7 +951,7 @@ LUALIB_API const char *luaL_tolstring (lua_State *L, int idx, size_t *len) {
LUALIB_API void luaL_setfuncs (lua_State *L, const luaL_Reg *l, int nup) { LUALIB_API void luaL_setfuncs (lua_State *L, const luaL_Reg *l, int nup) {
luaL_checkstack(L, nup, "too many upvalues"); luaL_checkstack(L, nup, "too many upvalues");
for (; l->name != NULL; l++) { /* fill the table with given functions */ for (; l->name != NULL; l++) { /* fill the table with given functions */
if (l->func == NULL) /* place holder? */ if (l->func == NULL) /* placeholder? */
lua_pushboolean(L, 0); lua_pushboolean(L, 0);
else { else {
int i; int i;

2
liolib.c
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@@ -773,7 +773,7 @@ static const luaL_Reg meth[] = {
** metamethods for file handles ** metamethods for file handles
*/ */
static const luaL_Reg metameth[] = { static const luaL_Reg metameth[] = {
{"__index", NULL}, /* place holder */ {"__index", NULL}, /* placeholder */
{"__gc", f_gc}, {"__gc", f_gc},
{"__close", f_gc}, {"__close", f_gc},
{"__tostring", f_tostring}, {"__tostring", f_tostring},

5
manual/manual.of
View File

@@ -4475,7 +4475,7 @@ otherwise, returns @id{NULL}.
} }
@APIEntry{void lua_toclose (lua_State *L, int index);| @APIEntry{void lua_toclose (lua_State *L, int index);|
@apii{0,0,m} @apii{0,0,v}
Marks the given index in the stack as a Marks the given index in the stack as a
to-be-closed slot @see{to-be-closed}. to-be-closed slot @see{to-be-closed}.
@@ -4492,6 +4492,9 @@ A slot marked as to-be-closed should not be removed from the stack
by any other function in the API except @Lid{lua_settop} or @Lid{lua_pop}, by any other function in the API except @Lid{lua_settop} or @Lid{lua_pop},
unless previously deactivated by @Lid{lua_closeslot}. unless previously deactivated by @Lid{lua_closeslot}.
This function raises an error if the value at the given slot
neither has a @idx{__close} metamethod nor is a false value.
This function should not be called for an index This function should not be called for an index
that is equal to or below an active to-be-closed slot. that is equal to or below an active to-be-closed slot.