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7cfe05d1ee
The Xmethod for std::deque::operator[] has the same bug that I recently
fixed for the std::deque::size() Xmethod. The first node might have
unused capacity at the start, which needs to be accounted for when
indexing into the deque.
libstdc++-v3/ChangeLog:
PR libstdc++/112491
* python/libstdcxx/v6/xmethods.py (DequeWorkerBase.index):
Correctly handle unused capacity at the start of the first node.
* testsuite/libstdc++-xmethods/deque.cc: Check index operator
when elements have been removed from the front.
(cherry picked from commit 452476db0c)