| commit | 75456f96d4bd201f815484e9d2ff2ae429305ab5 | [log] [tgz] |
|---|---|---|
| author | Johannes Schindelin <johannes.schindelin@gmx.de> | Tue Jul 26 18:06:21 2016 +0200 |
| committer | Junio C Hamano <gitster@pobox.com> | Tue Jul 26 11:13:44 2016 -0700 |
| tree | 4d3df45bdb277285c96077d7aa6b87d5d45170a7 | |
| parent | fbc87eb54409b5c7b080f1c23b767daefc9d6ede [diff] |
merge-recursive: handle return values indicating errors We are about to libify the recursive merge machinery, where we only die() in case of a bug or memory contention. To that end, we must heed negative return values as indicating errors. This requires our functions to be careful to pass through error conditions in call chains, and for quite a few functions this means that they have to return values to begin with. The next step will be to convert the places where we currently die() to return negative values (read: -1) instead. Note that we ignore errors reported by make_room_for_path(), consistent with the previous behavior (update_file_flags() used the return value of make_room_for_path() only to indicate an early return, but not a fatal error): if the error is really a fatal error, we will notice later; If not, it was not that serious a problem to begin with. (Witnesses in favor of this reasoning are t4151-am-abort and t7610-mergetool, which would start failing if we stopped on errors reported by make_room_for_path()). Also note: while this patch makes the code slightly less readable in update_file_flags() (we introduce a new "goto free_buf;" instead of an explicit "free(buf); return;"), it is a preparatory change for the next patch where we will convert all of the die() calls in the same function to go through the free_buf return path instead. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
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