From fd610c79b51ecd3be2ad3af9169b030cd53927ac Mon Sep 17 00:00:00 2001 From: "Arnold D. Robbins" Date: Thu, 21 Nov 2019 22:01:34 +0200 Subject: Update regexec.c. --- support/regexec.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) (limited to 'support/regexec.c') diff --git a/support/regexec.c b/support/regexec.c index 3c46ac81..38b6d671 100644 --- a/support/regexec.c +++ b/support/regexec.c @@ -1266,10 +1266,13 @@ proceed_next_node (const re_match_context_t *mctx, Idx nregs, regmatch_t *regs, if (type == OP_BACK_REF) { Idx subexp_idx = dfa->nodes[node].opr.idx + 1; - naccepted = regs[subexp_idx].rm_eo - regs[subexp_idx].rm_so; + if (subexp_idx < nregs) + naccepted = regs[subexp_idx].rm_eo - regs[subexp_idx].rm_so; if (fs != NULL) { - if (regs[subexp_idx].rm_so == -1 || regs[subexp_idx].rm_eo == -1) + if (subexp_idx >= nregs + || regs[subexp_idx].rm_so == -1 + || regs[subexp_idx].rm_eo == -1) return -1; else if (naccepted) { -- cgit v1.2.3