Thanks for the quick response Neil. I have not done any performance testing. Do you already have a set of files and programs that you use for benchmarking?
Compile with Control Flow Guard
gm: magick/image.c:1230: void DestroyImage(Image ): Assertion `image != (Image )...
SIGABRT in magick/colorspace.c:1052
SIGABRT in magick/image.c:1230
out-of-bounds write in coders/rle.c:524
out-of-bounds write in coders/sun.c:962
out-of-bounds write in coders/psd.c:892