Add debug help to find out what's compiling #22522
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We sometimes see that compiling test suites takes a long time or loops infinitely. Then the first problem is to find out which test source caused this behavior in the compiler. This can now be shown by turning on a new flag `debugPrintProgress` in `Run.scala`. If that flag is set to true, the compiler will print out each 10 seconds the list of currently compiled source files.
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We sometimes see that compiling test suites takes a long time or loops infinitely. Then the first problem is to find out which test source caused this behavior in the compiler. This can now be shown by turning on a new flag
debugPrintProgressinRun.scala. If that flag is set totrue, the compiler will print out each 10 seconds the list of currently compiled source files.