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unpack-trees: add usage notices around df_conflict_entry

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Avoid making users believe they need to initialize df_conflict_entry
to something (as happened with other output only fields before) with
a quick comment and a small sanity check.

Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Elijah Newren 2023-02-27 15:28:20 +00:00 committed by Junio C Hamano
parent 1ca13dd3ca
commit f297424a3a
2 changed files with 3 additions and 1 deletions
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2
unpack-trees.c
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@ -1876,6 +1876,8 @@ int unpack_trees(unsigned len, struct tree_desc *t, struct unpack_trees_options
BUG("o->internal.dir is for internal use only");
if (o->internal.pl)
BUG("o->internal.pl is for internal use only");
if (o->df_conflict_entry)
BUG("o->df_conflict_entry is an output only field");
trace_performance_enter();
trace2_region_enter("unpack_trees", "unpack_trees", the_repository);

2
unpack-trees.h
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@ -78,7 +78,7 @@ struct unpack_trees_options {
int head_idx;
struct cache_entry *df_conflict_entry;
struct cache_entry *df_conflict_entry; /* output only */
void *unpack_data;
struct index_state *dst_index;