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authorDavid Kalnischkies <david@kalnischkies.de>2015-11-20 00:54:07 +0100
committerDavid Kalnischkies <david@kalnischkies.de>2015-11-20 00:54:07 +0100
commit6789e01e9370b3b7f65d52138c5657eaa712b4d1 (patch)
treecf0b9282cae981271918512f7af62da7dda4e64c /cmdline/apt-internal-solver.cc
parent520624d562e54e8e2c0191fae723e668e3ece6b4 (diff)
do not segfault in cache generation on mmap failure
Out of memory and similar circumstanzas could cause MMap::Map to fail and especially the mmap/malloc calls in it. With some additional checking we can avoid segfaults and similar in such situations – at least in theory as if this is a real out of memory everything we do to handle the error could just as well run into a memory problem as well… But at least in theory (if MMap::Map is made to fail always) we can deal with it so good that a user actually never sees a failure (as the cache it tries to load with it fails and is discarded, so that DynamicMMap takes over and a new one is build) instead of segfaulting. Closes: 803417
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