https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106962
--- Comment #2 from Jamaika <lukaszcz18 at wp dot pl> --- For the inquisitive. I am adding open source. GCC 1X.X.0 displays no errors. Can check. Copy include files to gcc 1X.X.0 and run with webp2_nosimd.bat https://www.sendspace.com/file/jqx6ol