622876c8ab
The superclock rate is variable and is stored in session files since 7.0 . It is set globally when reading from a session file, and it really should be reset to a known state whenever a new blank session is created from an existing one. Currently, that doesn't happen. We fix that by resetting it in Temporal::reset(). For now, we are duplicating the default superclock rate 282240000 from superclock.h , but we can drop that when all code paths that use superclock also use Temporal::reset(). This will provide an (extra) guarantee that set_superclock_ticks_per_second() always is invoked before creating TempoMap or using superclock_ticks_per_second() in other ways. The DEBUG_EARLY_SCTS_USE in superclock.h is thus closer to passing.
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