https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70773
--- Comment #24 from PeteVine <tulipawn at gmail dot com> --- Or maybe not, gcov-dump-6 is able to read the file. $ gcov-dump-6 sudoku.gcda.good sudoku.gcda.good:data:magic `gcda':version `A80e' sudoku.gcda.good:warning:current version is `603*' sudoku.gcda.good:stamp 46451024 sudoku.gcda.good: a3000000: 82:PROGRAM_SUMMARY checksum=0x1b6601f6 sudoku.gcda.good: counts=29, runs=1, sum_all=283905002, run_max=58689000, sum_max=58689000 sudoku.gcda.good: counter histogram: sudoku.gcda.good: 0: num counts=2, min counter=0, cum_counter=0 sudoku.gcda.good: 1: num counts=2, min counter=1, cum_counter=2 sudoku.gcda.good: 35: num counts=6, min counter=1000, cum_counter=6000 sudoku.gcda.good: 41: num counts=2, min counter=3000, cum_counter=6000 sudoku.gcda.good: 48: num counts=2, min counter=9000, cum_counter=18000 sudoku.gcda.good: 54: num counts=1, min counter=27000, cum_counter=27000 sudoku.gcda.good: 55: num counts=1, min counter=29000, cum_counter=29000 sudoku.gcda.good: 58: num counts=1, min counter=52000, cum_counter=52000 sudoku.gcda.good: 60: num counts=2, min counter=81000, cum_counter=162000 sudoku.gcda.good: 82: num counts=1, min counter=3531000, cum_counter=3531000 sudoku.gcda.good: 86: num counts=4, min counter=6469000, cum_counter=26033000 sudoku.gcda.good: 92: num counts=1, min counter=19563000, cum_counter=19563000 sudoku.gcda.good: 98: num counts=4, min counter=58411000, cum_counter=234478000 sudoku.gcda.good: 01000000: 3:FUNCTION ident=108032747, lineno_checksum=0x0ceca33f, cfg_checksum=0x73ff2042 sudoku.gcda.good: 01a10000: 6:COUNTERS arcs 3 counts sudoku.gcda.good: 01af0000: 2:COUNTERS ior 1 counts sudoku.gcda.good: 01000000: 3:FUNCTION ident=82881, lineno_checksum=0x3ae31d81, cfg_checksum=0x707619b8 sudoku.gcda.good: 01a10000: 14:COUNTERS arcs 7 counts sudoku.gcda.good: 01af0000: 2:COUNTERS ior 1 counts sudoku.gcda.good: 01000000: 3:FUNCTION ident=1633341470, lineno_checksum=0xf25ea178, cfg_checksum=0x1bd90f34 sudoku.gcda.good: 01a10000: 22:COUNTERS arcs 11 counts sudoku.gcda.good: 01af0000: 2:COUNTERS ior 1 counts sudoku.gcda.good: 01000000: 3:FUNCTION ident=535938890, lineno_checksum=0x375a9f34, cfg_checksum=0x5d41b59e sudoku.gcda.good: 01a10000: 16:COUNTERS arcs 8 counts sudoku.gcda.good: 01af0000: 2:COUNTERS ior 1 counts