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Daksh Mamodiya
899e7231ab
cmCTestLaunch, which backs ctest --launch and ctest --instrument, derived its exit code from the child's SpawnResult and ExitStatus but ignored TermSignal. On POSIX a command killed by a signal reports ExitStatus 0 and TermSignal N, so the launcher reported success for a crashed or killed command, masking failed compile/link/custom rules on the dashboard and in instrumentation snippets. Classify the child with the ordered triple SpawnResult, TermSignal, ExitStatus, mapping a signal-killed child to a non-zero exit code. Native Windows is unaffected: abnormal termination already arrives as a non-zero exit code there. Fixes: #27921