* string.c (trnext): should advance char-wise.

  [ruby-core:43335][Bug #6156]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@35069 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 4 insertions, 4 deletions

diff --git a/string.c b/string.c
index 1a0b432c0e..ae5e64db62 100644
--- a/string.c
+++ b/string.c
@@ -4956,13 +4956,13 @@ trnext(struct tr *t, rb_encoding *enc)
     for (;;) {
 	if (!t->gen) {
 	    if (t->p == t->pend) return -1;
-	    if (t->p < t->pend - 1 && *t->p == '\\') {
-		t->p++;
+	    if (rb_enc_ascget(t->p, t->pend, &n, enc) == '\\') {
+		t->p += n;
 	    }
 	    t->now = rb_enc_codepoint_len(t->p, t->pend, &n, enc);
 	    t->p += n;
-	    if (t->p < t->pend - 1 && *t->p == '-') {
-		t->p++;
+	    if (rb_enc_ascget(t->p, t->pend, &n, enc) == '-') {
+		t->p += n;
 		if (t->p < t->pend) {
 		    unsigned int c = rb_enc_codepoint_len(t->p, t->pend, &n, enc);
 		    t->p += n;