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authorLibravatar Jeff Hostetler <jeffhost@microsoft.com>2021-02-24 14:31:57 +0000
committerLibravatar Junio C Hamano <gitster@pobox.com>2021-02-24 12:09:10 -0800
commit6347d649bcddf531f82d400103e23d99ea8f2fd4 (patch)
tree974c04458fe124407f7d011b85b753b48b2e7ae0 /t/t5813-proto-disable-ssh.sh
parentMerge branch 'tb/ci-run-cocci-with-18.04' into maint (diff)
downloadtgif-6347d649bcddf531f82d400103e23d99ea8f2fd4.tar.xz
dir: fix malloc of root untracked_cache_dir
Use FLEX_ALLOC_STR() to allocate the `struct untracked_cache_dir` for the root directory. Get rid of unsafe code that might fail to initialize the `name` field (if FLEX_ARRAY is not 1). This will make it clear that we intend to have a structure with an empty string following it. A problem was observed on Windows where the length of the memset() was too short, so the first byte of the name field was not zeroed. This resulted in the name field having garbage from a previous use of that area of memory. The record for the root directory was then written to the untracked-cache extension in the index. This garbage would then be visible to future commands when they reloaded the untracked-cache extension. Since the directory record for the root directory had garbage in the `name` field, the `t/helper/test-tool dump-untracked-cache` tool printed this garbage as the path prefix (rather than '/') for each directory in the untracked cache as it recursed. Signed-off-by: Jeff Hostetler <jeffhost@microsoft.com> Reviewed-by: Taylor Blau <me@ttaylorr.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
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