That's weird and an oddly specific failure. I confirm that code has been stable for a long time, and this is the second test of two almost identical tests run in a single function. It looks like the ASCII histogram is not drawn by the ostream operator, but the previous test in that function passed, which is basically doing the same thing, generating a little ASCII histogram drawing. Since the error is not showing the ASCII histogram drawing, either both should fail or none of them. -----Ursprüngliche Nachricht----- Von: boost@lists.boost.org <boost@lists.boost.org> Gesendet: Mittwoch, 26. November 2025 13:49 An: 'Boost developers' mailing list' <boost@lists.boost.org> Cc: Peter Dimov <pdimov@gmail.com> Betreff: [boost] Histogram test failure on master branch I'm seeing a new failure on the master branch: 883/2538 Test #977: run-boost_histogram-histogram_ostream_ascii_test ......................................***Failed 0.00 sec /home/runner/work/boost/boost/libs/histogram/test/histogram_ostream_ascii_te st.cpp(67): test 'str(h).c_str() == expected' ('BEGIN histogram(integer(0, 3, options=underflow | overflow))END' == 'BEGIN histogram(integer(0, 3, options=underflow | overflow)) +------------+ -1 0 | | 0 -1 |=== | 1 3 | ======== | 2 2 | ====== | 3 0 | | +------------+ END') failed in function 'void run_tests() [with Tag = boost::histogram::dynamic_tag]' 1 error detected. Histogram's master hasn't changed for 5 months, so this is probably caused by something else. The CI run is https://github.com/boostorg/boost/actions/runs/19686425029/job/56392904495 and it's being done in response to an Iterator change on master, although the change itself is non-functional. _______________________________________________ Boost mailing list -- boost@lists.boost.org To unsubscribe send an email to boost-leave@lists.boost.org https://lists.boost.org/mailman3/lists/boost.lists.boost.org/ Archived at: https://lists.boost.org/archives/list/boost@lists.boost.org/message/EMOXYVMD ZM4ZCSUULEBU77WII4LKMGLJ/