gcc:
2017-04-21  Bernd Edlinger  <bernd.edlinger@hotmail.de>

	* doc/invoke.texi: Document the -fprofile-abs-path option.
	* common.opt (fprofile-abs-path): New option.
	* gcov-io.h (gcov_write_filename): Declare.
	* gcov-io.c (gcov_write_filename): New function.
	* coverage.c (coverage_begin_function): Use gcov_write_filename.
	* profile.c (output_location): Likewise.

gcc/testsuite:
2017-04-21  Bernd Edlinger  <bernd.edlinger@hotmail.de>

	* gcc.misc-tests/gcov-1a.c: New test.