Comment #7 on issue 24160 by [email protected]: Crash on quit in DNS code
http://code.google.com/p/chromium/issues/detail?id=24160
@jar: So this crash was on a LinearHistogram. I had hastily pasted the
callsite above, but it was wrong; should instead read:
// Make a custom linear histogram for the region from 0 to boundary.
const size_t kBucketCount = 52;
static LinearHistogram histogram("DNS.QueueRecycledUnder2", TimeDelta(),
kBoundary, kBucketCount);
histogram.SetFlags(kUmaTargetedHistogramFlag);
histogram.AddTime(queue_duration_); <-----------------------------
So our puzzlement over why the earlier DCHECK() is explained by the fact
that the it would have been using LinearHistogram::BucketIndex() rather than
Histogram::BucketIndex().
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