fixes new gcc 10.1 compiler warnings

Author: technobly

code/veccart/Makefile

@@ -97,6 +97,7 @@ docker-build: Dockerfile
 docker:
 	docker run --rm -t -v `pwd`:/build/veccart -u `id -u ${USER}`:`id -g ${USER}` stm32-build make images $(HW_VER_ARGS)
 
+# '$ make bash' puts you in the docker container interactive shell for debugging
 bash:
 	docker run --rm -it -v `pwd`:/build/veccart -u `id -u ${USER}`:`id -g ${USER}` stm32-build bash
 

code/veccart/fatfs/ff.c

@@ -1366,7 +1366,10 @@ void gen_numname (
 		ns[i--] = c;
 		seq /= 16;
 	} while (seq);
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wstringop-overflow="
 	ns[i] = '~';
+#pragma GCC diagnostic pop
 
 	/* Append the number */
 	for (j = 0; j < i && dst[j] != ' '; j++) {

code/veccart/menu.c

@@ -27,7 +27,8 @@ void loadListing(char *fdir, dir_listing *listing, const int fnptrs, const int s
 	for (idx = 0; idx < listing->num_files; idx++) {
 		f_entry=&(listing->f_entry[idx]);
 
-		strncpy(buff, f_entry->fname, sizeof(buff));
+		strncpy(buff, f_entry->fname, sizeof(buff)-1);
+		buff[sizeof(buff)-1] = '\0';
 		name=buff;
 
 		is_dir=f_entry->is_dir;

code/veccart/usb_msc.c

@@ -854,9 +854,9 @@ static void msc_data_tx_cb(usbd_device *usbd_dev, uint8_t ep)
 /** @brief Handle various control requests related to the msc storage
  *     interface.
  */
-static int msc_control_request(usbd_device *usbd_dev,
-                struct usb_setup_data *req, uint8_t **buf, uint16_t *len,
-                void (**complete)(usbd_device *usbd_dev, struct usb_setup_data *req))
+static enum usbd_request_return_codes msc_control_request(usbd_device *usbd_dev,
+    struct usb_setup_data *req, uint8_t **buf, uint16_t *len,
+    void (**complete)(usbd_device *usbd_dev, struct usb_setup_data *req))
 {
     (void)complete;
     (void)usbd_dev;
@@ -893,7 +893,7 @@ static void msc_set_config(usbd_device *usbd_dev, uint16_t wValue)
                 usbd_dev,
                 USB_REQ_TYPE_CLASS | USB_REQ_TYPE_INTERFACE,
                 USB_REQ_TYPE_TYPE | USB_REQ_TYPE_RECIPIENT,
-                (usbd_control_callback) msc_control_request);
+                msc_control_request);
 }
 
 /** @addtogroup usb_msc */