diff --git a/src/lj_record.c b/src/lj_record.c
index 9e41ce05..46482aa2 100644
--- a/src/lj_record.c
+++ b/src/lj_record.c
@@ -571,10 +571,10 @@ static LoopEvent rec_iterl(jit_State *J, const BCIns iterins)
 }
 
 /* Record LOOP/JLOOP. Now, that was easy. */
-static LoopEvent rec_loop(jit_State *J, BCReg ra)
+static LoopEvent rec_loop(jit_State *J, BCReg ra, int skip)
 {
   if (ra < J->maxslot) J->maxslot = ra;
-  J->pc++;
+  J->pc += skip;
   return LOOPEV_ENTER;
 }
 
@@ -2424,7 +2424,7 @@ void lj_record_ins(jit_State *J)
     rec_loop_interp(J, pc, rec_iterl(J, *pc));
     break;
   case BC_LOOP:
-    rec_loop_interp(J, pc, rec_loop(J, ra));
+    rec_loop_interp(J, pc, rec_loop(J, ra, 1));
     break;
 
   case BC_JFORL:
@@ -2434,7 +2434,8 @@ void lj_record_ins(jit_State *J)
     rec_loop_jit(J, rc, rec_iterl(J, traceref(J, rc)->startins));
     break;
   case BC_JLOOP:
-    rec_loop_jit(J, rc, rec_loop(J, ra));
+    rec_loop_jit(J, rc, rec_loop(J, ra,
+				 !bc_isret(bc_op(traceref(J, rc)->startins))));
     break;
 
   case BC_IFORL:
diff --git a/src/lj_snap.c b/src/lj_snap.c
index f1358cf2..45e2008f 100644
--- a/src/lj_snap.c
+++ b/src/lj_snap.c
@@ -121,6 +121,9 @@ static MSize snapshot_framelinks(jit_State *J, SnapEntry *map, uint8_t *topslot)
   MSize f = 0;
   map[f++] = SNAP_MKPC(J->pc);  /* The current PC is always the first entry. */
 #endif
+  lj_assertJ(!J->pt ||
+	     (J->pc >= proto_bc(J->pt) &&
+	      J->pc < proto_bc(J->pt) + J->pt->sizebc), "bad snapshot PC");
   while (frame > lim) {  /* Backwards traversal of all frames above base. */
     if (frame_islua(frame)) {
 #if !LJ_FR2