Comment 2 for bug 1857741

It looks like Valgrind 3.15 has a single suppression file with about 1460 entries:

$ find /usr/local -name '*.sup*'
/usr/local/lib/valgrind/default.supp
$ wc -l /usr/local/lib/valgrind/default.supp
1458 /usr/local/lib/valgrind/default.supp

$ find /usr/ -name '*.sup*'
/usr/lib/valgrind/ncurses.supp
/usr/lib/valgrind/debian.supp
/usr/lib/valgrind/python2.supp
/usr/lib/valgrind/default.supp
/usr/lib/valgrind/python.supp
/usr/lib/valgrind/python3.supp
/usr/lib/valgrind/debian-libc6-dbg.supp
/usr/local/lib/valgrind/default.supp

It also looks like Debian's Valgrind has a similar suppression file:

$ wc -l /usr/lib/valgrind/default.supp
1387 /usr/lib/valgrind/default.supp

It looks like the guess about the missing supression file was wrong. I guess Debian is supplying a buggy Valgrind that needs updating.