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extmod/modre: Use specific error message if regex is too complex.

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If the error reporting mode is at least "normal", report a failure due to a
complex regex with a different message.

Fixes issue #17150.

Signed-off-by: Jeff Epler <jepler@gmail.com>
This commit is contained in:
Jeff Epler
2025-06-01 18:47:36 +02:00
committed by Damien George
parent 17951cee87
commit 745bec9ce3
1 changed files with 3 additions and 0 deletions
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extmod/modre.c
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@@ -427,6 +427,9 @@ static mp_obj_t mod_re_compile(size_t n_args, const mp_obj_t *args) {
const char *re_str = mp_obj_str_get_str(args[0]);
int size = re1_5_sizecode(re_str);
if (size == -1) {
#if MICROPY_ERROR_REPORTING >= MICROPY_ERROR_REPORTING_NORMAL
mp_raise_ValueError(MP_ERROR_TEXT("regex too complex"));
#endif
goto error;
}
mp_obj_re_t *o = mp_obj_malloc_var(mp_obj_re_t, re.insts, char, size, (mp_obj_type_t *)&re_type);