1.1 --- a/src/share/vm/opto/superword.cpp Fri Dec 14 11:22:26 2018 +0100
1.2 +++ b/src/share/vm/opto/superword.cpp Fri Jun 15 08:28:08 2018 -0700
1.3 @@ -482,7 +482,9 @@
1.4 if (init_nd->is_Con() && p.invar() == NULL) {
1.5 int init = init_nd->bottom_type()->is_int()->get_con();
1.6 int init_offset = init * p.scale_in_bytes() + offset;
1.7 - assert(init_offset >= 0, "positive offset from object start");
1.8 + if (init_offset < 0) { // negative offset from object start?
1.9 + return false; // may happen in dead loop
1.10 + }
1.11 if (vw % span == 0) {
1.12 // If vm is a multiple of span, we use formula (1).
1.13 if (span > 0) {
