tests: drop the xfail marker and its runtests support - #4544
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A test marked xfail could never fail the run: a failure counted as expected and a pass printed XPASS. The only user, interp/m98m99/12-M99-endless-main-program, got the marker in 2022 for a shutdown race (LinuxCNC#857) that 7ba944c fixed in 2025. The stale marker then hid the output change from LinuxCNC#4441 (LinuxCNC#4537, fixed in LinuxCNC#4540). The test passes 40 of 40 runs under CPU stress here. Remove the marker and the xfail handling. A test that wants a negative result negates it itself, as tests/overrun does; its checkresult and README follow the new summary line. The failure label goes back to FAIL. Fixes LinuxCNC#4537 Fixes LinuxCNC#857
BsAtHome
approved these changes
Sep 15, 2026
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Remove the
xfailmarker fromtests/interp/m98m99/12-M99-endless-main-programand the xfail handling fromruntests.The marker meant the test could never fail the run: a failure counted as expected, a pass printed
XPASS. It was added in 2022 for the shutdown race in #857, which 7ba944c fixed in 2025; the test has passed since. The stale marker is what hid the output change from #4441 until #4537 (fixed by #4540).I ran the test 40 times under CPU stress (2x oversubscribed cores with IO churn, then pinned to one core with six busy loops): 40 of 40 pass.
With the handling gone, a failing test always fails the run. A test that wants a negative result negates it itself, as
tests/overrunalready does; itscheckresultgrep and README follow the new summary line. The failure label goes back toFAIL:(it has printedXFAIL:for every failure since the marker was added).Fixes #4537
Fixes #857