Wrong stack adjustment in `ecall()` (f35f975 fix
MODIFY
src/vm.c
src/vm.c
@@ -316,6 +316,7 @@ ecall(mrb_state *mrb)
ptrdiff_t cioff;
int ai = mrb_gc_arena_save(mrb);
int i = --c->eidx;
+ int nregs;
if (i<0) return;
if (ci - c->cibase > MRB_FUNCALL_DEPTH_MAX) {
@@ -325,7 +326,7 @@ ecall(mrb_state *mrb)
if (!p) return;
mrb_assert(!MRB_PROC_CFUNC_P(p));
c->ensure[i] = NULL;
- c->stack += ci->proc->body.irep->nregs;
+ nregs = ci->proc->body.irep->nregs;
cioff = ci - c->cibase;
ci = cipush(mrb);
ci->stackent = mrb->c->stack;
@@ -335,6 +336,7 @@ ecall(mrb_state *mrb)
ci->proc = p;
ci->nregs = p->body.irep->nregs;
ci->target_class = MRB_PROC_TARGET_CLASS(p);
+ c->stack += nregs;
env = MRB_PROC_ENV(p);
mrb_assert(env);
exc = mrb->exc; mrb->exc = 0;

Wrong stack adjustment in `ecall()` (f35f975 #3859); fix #3862