| commit | 4d0984bebc5fc5662d2891ee41f7d49c32488744 | [log] [tgz] |
|---|---|---|
| author | Jeff King <peff@peff.net> | Mon Nov 12 09:46:54 2018 -0500 |
| committer | Junio C Hamano <gitster@pobox.com> | Tue Nov 13 14:22:02 2018 +0900 |
| tree | 5421c9279a27769df112e4447ce07f1787a66409 | |
| parent | 8858448bb49332d353febc078ce4a3abcc962efe [diff] |
fsck: do not reuse child_process structs The run-command API makes no promises about what is left in a struct child_process after a command finishes, and it's not safe to simply reuse it again for a similar command. In particular: - if you use child->args or child->env_array, they are cleared after finish_command() - likewise, start_command() may point child->argv at child->args->argv; reusing that would lead to accessing freed memory - the in/out/err may hold pipe descriptors from the previous run These two calls are _probably_ OK because they do not use any of those features. But it's only by chance, and may break in the future; let's reinitialize our struct for each program we run. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
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