Ever since e9bc6d6b34afc0063cc5181b59f77eeb81b1182d I see the error from the subject line for most tests when running make test, although they are not present when running make test_harness Example sequence: $ git clean -dfx $ ./Configure -Dusethreads -Doptimize=-g -d -Dusedevel -Dcc=ccache\ gcc -Dld=gcc -DDEBUGGING $ TEST_FILES=base/rs.t make -j8 test And then i see stuff like this: $ ./runtests choose t/base/rs ... Unbalanced saves: 2 more saves than restores ok All tests successful. Elapsed: 0 sec When I go to the preceding commit ddd5ebe0cadc81a0360ad8007674490fda89ee88 ./runtests choose t/base/rs ... ok All tests successful. Elapsed: 0 sec u=0.01 s=0.00 cu=0.00 cs=0.00 scripts=1 tests=41 Running e9bc6d6b34afc0063cc5181b59f77eeb81b1182d under test_harness instead of test: TESTFILE=harness ./runtests choose base/rs.t .. ok All tests successful. Files=1, Tests=41, 0 wallclock secs ( 0.02 usr + 0.00 sys = 0.02 CPU) Result: PASS Karl I hope this helps you debug this... cheers, Yves -- perl -Mre=debug -e "/just|another|perl|hacker/"Thread Next