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Fix stack underflow with generator in iterable (saghul) (#488)

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Fabrice Bellard 2026-03-21 13:43:57 +01:00
parent aaf0174e71
commit 69090b969f
1 changed files with 6 additions and 2 deletions
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8
quickjs.c
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@ -28196,8 +28196,7 @@ static __exception int js_parse_for_in_of(JSParseState *s, int label_name,
JS_FreeAtom(ctx, var_name);
if (token_is_pseudo_keyword(s, JS_ATOM_of)) {
break_entry.has_iterator = is_for_of = TRUE;
break_entry.drop_count += 2;
is_for_of = TRUE;
if (has_initializer)
goto initializer_error;
} else if (s->token.val == TOK_IN) {
@ -28226,6 +28225,11 @@ static __exception int js_parse_for_in_of(JSParseState *s, int label_name,
the TDZ values are in the closures */
close_scopes(s, s->cur_func->scope_level, block_scope_level);
if (is_for_of) {
/* set has_iterator after the iterable expression is parsed so
that a yield in the expression does not try to close a
not-yet-created iterator */
break_entry.has_iterator = TRUE;
break_entry.drop_count += 2;
if (is_async)
emit_op(s, OP_for_await_of_start);
else