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avoid a crash when dragging a meter change near a BBT marker

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This commit is contained in:
Paul Davis 2023-10-07 11:01:23 -06:00
parent cece64e649
commit ec34c2137d
1 changed files with 9 additions and 1 deletions
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10
libs/temporal/tempo.cc
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@ -1970,8 +1970,16 @@ TempoMap::move_meter (MeterPoint const & mp, timepos_t const & when, bool earlie
} else {
bbt = bbt.round_down_to_bar ();
}
/* Now find the correct TempoMetric for the new BBT position (which may
* differ from the one we determined earlier.
*
* The search for the correct meter will be limited by the meter we're
* dragging. But the search for the correct tempo needs to bounded by
* both the BBT *and* the beat position, in case there is an upcoming
* BBT marker.
*/
for (t = _tempos.begin(), prev_t = _tempos.end(); t != _tempos.end() && t->bbt() < bbt; ++t) { prev_t = t; }
for (t = _tempos.begin(), prev_t = _tempos.end(); t != _tempos.end() && t->bbt() < bbt && t->beats() < beats; ++t) { prev_t = t; }
for (m = _meters.begin(), prev_m = _meters.end(); m != _meters.end() && m->bbt() < bbt && *m != mp; ++m) { prev_m = m; }
if (prev_m == _meters.end()) {