Reuse the backref if it isn't marked as busy.

[Misc #20652]
2025-02-24 14:42:09 +01:00 · 2025-02-24 14:42:09 +01:00 · 97e6ad49a4
commit 97e6ad49a4
parent 87f9c3c65e
1 changed files with 12 additions and 3 deletions
--- a/re.c
+++ b/re.c
@ -1813,11 +1813,20 @@ rb_reg_search_set_match(VALUE re, VALUE str, long pos, int reverse, int set_back
        return ONIG_MISMATCH;
    }

-    VALUE match;
-    if (set_match && RTEST(*set_match)) {
+    VALUE match = Qnil;
+    if (set_match) {
        match = *set_match;
    }
-    else {
+
+    if (NIL_P(match)) {
+        match = rb_backref_get();
+    }
+
+    if (!NIL_P(match) && FL_TEST(match, MATCH_BUSY)) {
+        match = Qnil;
+    }
+
+    if (NIL_P(match)) {
        match = match_alloc(rb_cMatch);
    }