diff options
Diffstat (limited to 'pngpread.c')
| -rw-r--r-- | pngpread.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/pngpread.c b/pngpread.c index 2e0208813..557153366 100644 --- a/pngpread.c +++ b/pngpread.c @@ -501,7 +501,10 @@ png_push_save_buffer(png_structrp png_ptr) png_error(png_ptr, "Insufficient memory for save_buffer"); } - memcpy(png_ptr->save_buffer, old_buffer, png_ptr->save_buffer_size); + if (old_buffer) + memcpy(png_ptr->save_buffer, old_buffer, png_ptr->save_buffer_size); + else if (png_ptr->save_buffer_size) + png_error(png_ptr, "save_buffer error"); png_free(png_ptr, old_buffer); png_ptr->save_buffer_max = new_max; } |