make check error on OSX #4708

Running make check with current git HEAD, I'm getting:

Making check in src
make  check-TESTS
PASS: qt/test/test_bitcoin-qt
PASS: test/test_bitcoin
============================================================================
Testsuite summary for Bitcoin Core 0.9.99
============================================================================
# TOTAL: 2
# PASS:  2
# SKIP:  0
# XFAIL: 0
# FAIL:  0
# XPASS: 0
# ERROR: 0
============================================================================
make  check-local
/usr/local/opt/coreutils/libexec/gnubin/mkdir -p qa/tmp
expr: non-integer argument
Error: An error occurred while setting up the RPC address 127.0.0.1 port 1 for listening: bind: Permission denied
tail: ‘/Users/gavin/src/bitcoin/.bitcoin/regtest/debug.log’ has been replaced;  following end of new file

I'm going to guess this is due to 6548cc9f9073bf6602e17f62017af5c0e2bc3457 . Works fine for me on 10.9, must be some subtle built-in difference. Will have a look.

I was completely wrong above. The likely reason for the failure (unfortunately) is that these have been broken for a long time but nobody's noticed. The depends builder automatically fetches and configures the comparison tool, so those tests are finally running. #4710 should fix.

Fixed.