tree 4561fc8e306ada8d4356e1d4517748675fc1c738
parent c71dff7e8a1bde298972c10901802608bd4cbb55
author Patrick Steinhardt <ps@pks.im> 1495195575 +0200
committer Patrick Steinhardt <ps@pks.im> 1496734724 +0200

index: verify we have enough space left when writing index entries

In our code writing index entries, we carry around a `disk_size`
representing how much memory we have in total and pass this value to
`git_encode_varint` to do bounds checks. This does not make much sense,
as at the time when passing on this variable it is already out of date.
Fix this by subtracting used memory from `disk_size` as we go along.
Furthermore, assert we've actually got enough space left to do the final
path memcpy.