Previously reported via github pull request #1188 as an out of bounds
access to u.uhpinc[], followed by issue #1189 when it was closed, the
backtrace accompanying new assertion failure provided more information
that led to figuring out the problem.
Only mattered for the debug fuzzer; wouldn't happen in regular play.
When the hero dies during fuzzing, the fuzzer sometimes restores lost
levels via blessed potion of restore ability. If that happened to a
hero who died by being life-drained while at level 1 then losexp()'s
assumption that life-saved hero was still level 1 got violated. If
levels had been lost all the way down from a peak of 30, restoration
to u.ulevel==30 resulted in invalid array indexing into u.uhpinc[],
then failure of 'assert(u.ulevel >= 0 && u.ulevel < MAXULEV)' which
was added to avoid that.
Pull request #1188 and issue #1189 are already closed, but they hadn't
actually been solved yet.
Fixes#1188Fixes#1189
90d515b6ab