[perl #119811] Remove %DB::lsub

Under the debugger (the -d switch), if there is a DB::sub subroutine,
then %DB::lsub gets autovivified during a call to an lvalue sub.  That
hash is never used.  The code for vivifying the *DB::lsub glob was
copied from *DB::sub when lsub was added, and *DB::sub does have a
hash (%DB::sub), but *DB::lsub doesn’t need one.

1 files changed, 1 insertions, 1 deletions

diff --git a/pp_hot.c b/pp_hot.c
index 48239a38ee..7ae8f3a019 100644
--- a/pp_hot.c
+++ b/pp_hot.c
@@ -2621,7 +2621,7 @@ try_autoload:
 	     PL_curcopdb = PL_curcop;
          if (CvLVALUE(cv)) {
              /* check for lsub that handles lvalue subroutines */
-	     cv = GvCV(gv_HVadd(gv_fetchpvs("DB::lsub", GV_ADDMULTI, SVt_PVHV)));
+	     cv = GvCV(gv_fetchpvs("DB::lsub", GV_ADDMULTI, SVt_PVCV));
              /* if lsub not found then fall back to DB::sub */
 	     if (!cv) cv = GvCV(PL_DBsub);
          } else {