/usr/src/gcc-5/debian/gcc-BV-hppa64-linux-gnu.overrides is in gcc-5-source 5.3.1-14ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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gcc-@BV@-hppa64-linux-gnu binary: binary-without-manpage
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