exception jump should not cross mrb_funcall border; close #276

1 files changed, 4 insertions, 0 deletions

diff --git a/src/vm.c b/src/vm.c
index 32d2a6a24..826cdafef 100644
--- a/src/vm.c
+++ b/src/vm.c
@@ -1013,6 +1013,10 @@ mrb_run(mrb_state *mrb, struct RProc *proc, mrb_value self)
         while (ci[0].ridx == ci[-1].ridx) {
           cipop(mrb);
           ci = mrb->ci;
+	  if (ci->acc < 0) {
+	    mrb->jmp = prev_jmp;
+	    longjmp(*(jmp_buf*)mrb->jmp, 1);
+	  }
 	  while (eidx > mrb->ci->eidx) {
 	    ecall(mrb, --eidx);
 	  }