John

`#define MJSON_ENABLE_RPC 0` run the main in unit_test.c, and run code `{ char *s = NULL; const char *fmt = "{\"a\":%d, \"b\":%u, \"c\":%ld, \"d\":%lu, \"e\":%M}"; ASSERT(mjson_printf(&mjson_print_dynamic_buf, &s, fmt, -1, 3456789012,...

My hardware is stm32f103 and mdk IDE, compiler is armclang 6.

> I couldn't reproduce it in v9.4.0. Is your version of LVGL newer or older than this fix? [#8765](https://github.com/lvgl/lvgl/pull/8765) I use 9.4.0 official version release at 10.16.

@uLipe @liamHowatt The results of various combinations are as follows: 1. RTOS=NONE, lv_st_ltdc_create_direct with double buffering. --> OK. 2. RTOS=NONE, lv_st_ltdc_create_direct with single buffering. --> OK. 3. RTOS=NONE, lv_st_ltdc_create_partial with...

@uLipe @liamHowatt Is there any new testing about this issue?