new Date().toLocaleString() raise exception randmly.

[lygstate]

I add the following exepcetion:
"Calling to undefined function opcode:%d call_argc:%d this_tag:%d\n"
And raised with

object TypeError: Calling to undefined function opcode:36 call_argc:0 this_tag:234771
object TypeError: Calling to undefined function opcode:36 call_argc:0 this_tag:277127
object TypeError: Calling to undefined function opcode:36 call_argc:0 this_tag:326234

The error are apperared randomly

        CASE(OP_call_method):
        CASE(OP_tail_call_method):
            {
                call_argc = get_u16(pc);
                pc += 2;
                call_argv = sp - call_argc;
                sf->cur_pc = pc;
                if (JS_IsUndefined(call_argv[-1])) {
                    int this_tag = JS_VALUE_GET_TAG(call_argv[-2]);
                    ret_val = JS_ThrowTypeError(ctx, "Calling to undefined function opcode:%d call_argc:%d this_tag:%d\n",
                         opcode, call_argc, this_tag);
                    goto exception;
                }
                ret_val = JS_CallInternal(ctx, call_argv[-1], call_argv[-2],
                                          JS_UNDEFINED, call_argc, call_argv, 0);
                if (unlikely(JS_IsException(ret_val)))
                    goto exception;
                if (opcode == OP_tail_call_method)
                    goto done;
                for(i = -2; i < call_argc; i++)
                    JS_FreeValue(ctx, call_argv[i]);
                sp -= call_argc + 2;
                *sp++ = ret_val;
            }

[bellard]

It is likely a specific build issue you have as the problem cannot be reproduced.

[lygstate]

Forget to mark this as closed, it's because when I am porting this to ARM, the default targett ARM freertos behavior is not
saving/loading the floating point registers when switching threads.