zproto: 'make check' fails tests on OS X

After running:

./autogen.sh
./configure
make check

The following output is received, indicating a failure in the self test:

Making check in src
/Applications/Xcode.app/Contents/Developer/usr/bin/make  check-TESTS
../config/test-driver: line 107: 72776 Segmentation fault: 11  "$@" > $log_file 2>&1
FAIL: zproto_selftest
/Applications/Xcode.app/Contents/Developer/usr/bin/make  all-am
make[5]: Nothing to be done for `all-am'.
============================================================================
Testsuite summary for zproto 0.0.1
============================================================================
# TOTAL: 1
# PASS:  0
# SKIP:  0
# XFAIL: 0
# FAIL:  1
# XPASS: 0
# ERROR: 0
============================================================================
See src/test-suite.log
Please report to zproto@zeromq.org
============================================================================
make[3]: *** [test-suite.log] Error 1
make[2]: *** [check-TESTS] Error 2
make[1]: *** [check-am] Error 2
make: *** [check-recursive] Error 1

src/test-suite.log contains:

======================================
   zproto 0.0.1: src/test-suite.log
======================================

# TOTAL: 1
# PASS:  0
# SKIP:  0
# XFAIL: 0
# FAIL:  1
# XPASS: 0
# ERROR: 0

.. contents:: :depth: 2

FAIL: zproto_selftest
=====================