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Fix memory leak in realloc failure handling (#22188)

master
Kuan-Wei, Chiu 2023-10-04 06:27:11 +08:00 committed by GitHub
parent d6b16b0df0
commit 3df155f203
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1 changed files with 4 additions and 3 deletions
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7
quantum/painter/lvgl/qp_lvgl.c
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@ -96,13 +96,14 @@ bool qp_lvgl_attach(painter_device_t device) {
// Set up lvgl display buffer // Set up lvgl display buffer
static lv_disp_draw_buf_t draw_buf; static lv_disp_draw_buf_t draw_buf;
// Allocate a buffer for 1/10 screen size // Allocate a buffer for 1/10 screen size
const size_t count_required = driver->panel_width * driver->panel_height / 10; const size_t count_required = driver->panel_width * driver->panel_height / 10;
color_buffer = color_buffer ? realloc(color_buffer, sizeof(lv_color_t) * count_required) : malloc(sizeof(lv_color_t) * count_required); void * new_color_buffer = realloc(color_buffer, sizeof(lv_color_t) * count_required);
if (!color_buffer) { if (!new_color_buffer) {
qp_dprintf("qp_lvgl_attach: fail (could not set up memory buffer)\n"); qp_dprintf("qp_lvgl_attach: fail (could not set up memory buffer)\n");
qp_lvgl_detach(); qp_lvgl_detach();
return false; return false;
} }
color_buffer = new_color_buffer;
memset(color_buffer, 0, sizeof(lv_color_t) * count_required); memset(color_buffer, 0, sizeof(lv_color_t) * count_required);
// Initialize the display buffer. // Initialize the display buffer.
lv_disp_draw_buf_init(&draw_buf, color_buffer, NULL, count_required); lv_disp_draw_buf_init(&draw_buf, color_buffer, NULL, count_required);