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future reserved keywords are forbidden in function name and arguments when the function body is in strict mode

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Fabrice Bellard 2025-04-22 18:51:54 +02:00
parent e5e724829a
commit 99a855f2c7
1 changed files with 10 additions and 2 deletions
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12
quickjs.c
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@ -33822,6 +33822,12 @@ static __exception int js_parse_directives(JSParseState *s)
return js_parse_seek_token(s, &pos); return js_parse_seek_token(s, &pos);
} }
/* return TRUE if the keyword is forbidden only in strict mode */
static BOOL is_strict_future_keyword(JSAtom atom)
{
return (atom >= JS_ATOM_LAST_KEYWORD + 1 && atom <= JS_ATOM_LAST_STRICT_KEYWORD);
}
static int js_parse_function_check_names(JSParseState *s, JSFunctionDef *fd, static int js_parse_function_check_names(JSParseState *s, JSFunctionDef *fd,
JSAtom func_name) JSAtom func_name)
{ {
@ -33832,13 +33838,15 @@ static int js_parse_function_check_names(JSParseState *s, JSFunctionDef *fd,
if (!fd->has_simple_parameter_list && fd->has_use_strict) { if (!fd->has_simple_parameter_list && fd->has_use_strict) {
return js_parse_error(s, "\"use strict\" not allowed in function with default or destructuring parameter"); return js_parse_error(s, "\"use strict\" not allowed in function with default or destructuring parameter");
} }
if (func_name == JS_ATOM_eval || func_name == JS_ATOM_arguments) { if (func_name == JS_ATOM_eval || func_name == JS_ATOM_arguments ||
is_strict_future_keyword(func_name)) {
return js_parse_error(s, "invalid function name in strict code"); return js_parse_error(s, "invalid function name in strict code");
} }
for (idx = 0; idx < fd->arg_count; idx++) { for (idx = 0; idx < fd->arg_count; idx++) {
name = fd->args[idx].var_name; name = fd->args[idx].var_name;
if (name == JS_ATOM_eval || name == JS_ATOM_arguments) { if (name == JS_ATOM_eval || name == JS_ATOM_arguments ||
is_strict_future_keyword(name)) {
return js_parse_error(s, "invalid argument name in strict code"); return js_parse_error(s, "invalid argument name in strict code");
} }
} }