From d13925be9abe02438f3c74ffcbc65ce74dde3de8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Pablo=20Mart=C3=ADnez?=
 <58857054+elpekenin@users.noreply.github.com>
Date: Fri, 7 Jul 2023 16:51:19 +0200
Subject: [Bugfix] Check `NULL` pointers on QP (#20481)

---
 quantum/painter/qp_draw_text.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

(limited to 'quantum/painter/qp_draw_text.c')

diff --git a/quantum/painter/qp_draw_text.c b/quantum/painter/qp_draw_text.c
index a70caac6f4..ff6fc01d11 100644
--- a/quantum/painter/qp_draw_text.c
+++ b/quantum/painter/qp_draw_text.c
@@ -136,7 +136,7 @@ painter_font_handle_t qp_load_font_mem(const void *buffer) {
 
 bool qp_close_font(painter_font_handle_t font) {
     qff_font_handle_t *qff_font = (qff_font_handle_t *)font;
-    if (!qff_font->validate_ok) {
+    if (!qff_font || !qff_font->validate_ok) {
         qp_dprintf("qp_close_font: fail (invalid font)\n");
         return false;
     }
@@ -380,7 +380,7 @@ static inline bool qp_font_code_point_handler_drawglyph(qff_font_handle_t *qff_f
 
 int16_t qp_textwidth(painter_font_handle_t font, const char *str) {
     qff_font_handle_t *qff_font = (qff_font_handle_t *)font;
-    if (!qff_font->validate_ok) {
+    if (!qff_font || !qff_font->validate_ok) {
         qp_dprintf("qp_textwidth: fail (invalid font)\n");
         return false;
     }
@@ -406,13 +406,13 @@ int16_t qp_drawtext(painter_device_t device, uint16_t x, uint16_t y, painter_fon
 int16_t qp_drawtext_recolor(painter_device_t device, uint16_t x, uint16_t y, painter_font_handle_t font, const char *str, uint8_t hue_fg, uint8_t sat_fg, uint8_t val_fg, uint8_t hue_bg, uint8_t sat_bg, uint8_t val_bg) {
     qp_dprintf("qp_drawtext_recolor: entry\n");
     painter_driver_t *driver = (painter_driver_t *)device;
-    if (!driver->validate_ok) {
+    if (!driver || !driver->validate_ok) {
         qp_dprintf("qp_drawtext_recolor: fail (validation_ok == false)\n");
         return 0;
     }
 
     qff_font_handle_t *qff_font = (qff_font_handle_t *)font;
-    if (!qff_font->validate_ok) {
+    if (!qff_font || !qff_font->validate_ok) {
         qp_dprintf("qp_drawtext_recolor: fail (invalid font)\n");
         return false;
     }
-- 
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