gistfile1.txt

diff --git a/src/core/interp.c b/src/core/interp.c
index 9a84b61..6c3bc73 100644
--- a/src/core/interp.c
+++ b/src/core/interp.c
@@ -4372,6 +4372,7 @@ void MVM_interp_run(MVMThreadContext *tc, void (*initial_invoke)(MVMThreadContex
                 goto NEXT;
             OP(sp_log):
                 if (tc->cur_frame->spesh_log_idx >= 0) {
+printf("logging at %d\n", (int)(GET_UI16(cur_op, 2) * MVM_SPESH_LOG_RUNS + tc->cur_frame->spesh_log_idx));
                     MVM_ASSIGN_REF(tc, &(tc->cur_frame->static_info->common.header),
                         tc->cur_frame->spesh_log_slots[
                             GET_UI16(cur_op, 2) * MVM_SPESH_LOG_RUNS + tc->cur_frame->spesh_log_idx
diff --git a/src/spesh/osr.c b/src/spesh/osr.c
index 2b03a7d..f93825d 100644
--- a/src/spesh/osr.c
+++ b/src/spesh/osr.c
@@ -55,6 +55,7 @@ void MVM_spesh_osr(MVMThreadContext *tc) {
         tc->cur_frame->effective_handlers    = specialized->handlers;
         tc->cur_frame->effective_spesh_slots = specialized->spesh_slots;
         tc->cur_frame->spesh_log_slots       = specialized->log_slots;
+printf("OSR set up with %d log slots\n", specialized->num_log_slots);
         tc->cur_frame->spesh_cand            = specialized;
         tc->cur_frame->spesh_log_idx         = 0;