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regrtest: python -m test -j1 --verbose3 should not replace sys.stdout #110367
Currently, when a test does crash, its output is lost. It gives bug reports like issue gh-110364 which contains no output, just an exit code :-( The problem is that run_single_test() replaces sys.stdout when --verbose3 option is used. If Python runs normally, the output is ignored on success, or display on error.
When we run a worker process, we can make this decision in the main process: ignore the output on error, or display the output on error.
Currently, when a test does crash, its output is lost. It gives bug reports like issue gh-110364 which contains no output, just an exit code :-( The problem is that run_single_test() replaces sys.stdout when --verbose3 option is used. If Python runs normally, the output is ignored on success, or display on error.
When we run a worker process, we can make this decision in the main process: ignore the output on error, or display the output on error.
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