Hi,

saving a QImage in XPM format then loading the saved XPM image results in warnings, and the loaded image differs from the original one. The right-most column is "missing" (it is black).

E.g:

 QImage: XPM pixels missing on image line 39 (possibly a C++ trigraph).

I attached an example project to reproduce the issue. It worked with qt 5.5 and 5.13 too. I also checked that the XPM saved by the qt 5.5 and 5.15.1 version is the same.