Um. I'm not completely sure what to put here because the subject says most of the important stuff. Anyway, I'm on windows and compiling using the -fprofile-generate=prof option. GCC seems to like to create a directory tree inside the prof directory, and it starts by creating a directory called C:. Windows doesn't seem to allow colons in a file or directory name, so it doesn't work. Some simple logic to remove the colon from the folder name to create should fix it hopefully. Thanks!
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