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extmod/modure: Make sure that errors in regexps are caught early.

This commit is contained in:
Paul Sokolovsky 2015-11-01 00:38:12 +03:00
parent 7cce2f664c
commit aee704ebe1
2 changed files with 9 additions and 0 deletions
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4
extmod/modure.c
View File

@ -185,6 +185,9 @@ STATIC const mp_obj_type_t re_type = {
STATIC mp_obj_t mod_re_compile(uint 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) {
goto error;
}
mp_obj_re_t *o = m_new_obj_var(mp_obj_re_t, char, size);
o->base.type = &re_type;
int flags = 0;
@ -193,6 +196,7 @@ STATIC mp_obj_t mod_re_compile(uint n_args, const mp_obj_t *args) {
}
int error = re1_5_compilecode(&o->re, re_str);
if (error != 0) {
error:
nlr_raise(mp_obj_new_exception_msg(&mp_type_ValueError, "Error in regex"));
}
if (flags & FLAG_DEBUG) {

5
tests/extmod/ure1.py
View File

@ -62,3 +62,8 @@ m = re.match('a*?', 'ab'); print(m.group(0))
m = re.match('^ab$', 'ab'); print(m.group(0))
m = re.match('a|b', 'b'); print(m.group(0))
m = re.match('a|b|c', 'c'); print(m.group(0))
try:
re.compile("*")
except:
print("Caught invalid regex")