diff options
Diffstat (limited to 'Modules')
| -rw-r--r-- | Modules/_sre.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/Modules/_sre.c b/Modules/_sre.c index 4421eae..e76144d 100644 --- a/Modules/_sre.c +++ b/Modules/_sre.c @@ -1295,13 +1295,18 @@ entrance: LASTMARK_RESTORE(); - if (ctx->count >= ctx->u.rep->pattern[2] - && ctx->u.rep->pattern[2] != SRE_MAXREPEAT) + if ((ctx->count >= ctx->u.rep->pattern[2] + && ctx->u.rep->pattern[2] != SRE_MAXREPEAT) || + state->ptr == ctx->u.rep->last_ptr) RETURN_FAILURE; ctx->u.rep->count = ctx->count; + /* zero-width match protection */ + DATA_PUSH(&ctx->u.rep->last_ptr); + ctx->u.rep->last_ptr = state->ptr; DO_JUMP(JUMP_MIN_UNTIL_3,jump_min_until_3, ctx->u.rep->pattern+3); + DATA_POP(&ctx->u.rep->last_ptr); if (ret) { RETURN_ON_ERROR(ret); RETURN_SUCCESS; |