Use temporary variable to avoid potential crash; fix
This issue was original reported by
suggested the solution.
`regs` may be reallocated in the function call.
MODIFY
src/vm.c
src/vm.c
@@ -2411,7 +2411,8 @@ RETRY_TRY_BLOCK:
CASE(OP_RANGE) {
/* A B C R(A) := range_new(R(B),R(B+1),C) */
int b = GETARG_B(i);
- regs[GETARG_A(i)] = mrb_range_new(mrb, regs[b], regs[b+1], GETARG_C(i));
+ mrb_value val = mrb_range_new(mrb, regs[b], regs[b+1], GETARG_C(i));
+ regs[GETARG_A(i)] = val;
ARENA_RESTORE(mrb, ai);
NEXT;
}

Use temporary variable to avoid potential crash; fix #3387

This issue was original reported by https://hackerone.com/icanthack
https://hackerone.com/titanous suggested the solution.
`regs` may be reallocated in the function call.