mgl_window_get_clipboard_string set ptr to NULL after free when failing

2 files changed, 2 insertions, 0 deletions

diff --git a/include/mgl/window/window.h b/include/mgl/window/window.h
index ed50dcb..350421d 100644
--- a/include/mgl/window/window.h
+++ b/include/mgl/window/window.h
@@ -126,6 +126,7 @@ bool mgl_window_get_clipboard(mgl_window *self, mgl_clipboard_callback callback,
     This function returns false if there is nothing to copy, or if the clipboard
     contains clipboard data that is not a string or if it fails to copy the data
     for any other reason.
+    Note: The string is not null terminated.
 */
 bool mgl_window_get_clipboard_string(mgl_window *self, char **str, size_t *size);
 void mgl_window_set_key_repeat_enabled(mgl_window *self, bool enabled);
diff --git a/src/window/window.c b/src/window/window.c
index 5ae4d3f..709f4b1 100644
--- a/src/window/window.c
+++ b/src/window/window.c
@@ -1221,6 +1221,7 @@ bool mgl_window_get_clipboard_string(mgl_window *self, char **str, size_t *size)
     const bool success = mgl_window_get_clipboard(self, clipboard_copy_string_callback, &callback_data, MGL_CLIPBOARD_TYPE_STRING);
     if(!success) {
         free(*str);
+        *str = NULL;
         *size = 0;
     }
     return success;