vimrc cannot be load

I build a x64 version of vim from git, copy the new gvim.exe to "d:\vim\vim80"(this folder is renamed from my old vim74), create a vimrc of "d:\vim\vim80\vimrc", run gvim.exe, but vimrc can not be load!

But I rename "d:\vim\vim80" to "d:\vim\vim8", run gvim.exe again, now vimrc can be load.

Does anybody have meeted the same problem?

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