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diff: fix filtering of additional headers under --remerge-diff 

Commit 95433eeed9 ("diff: add ability to insert additional headers for
paths", 2022-02-02) introduced the possibility of additional headers.
Because there could be conflicts with no content differences (e.g. a
modify/delete conflict resolved in favor of taking the modified file
as-is), that commit also modified the diff_queue_is_empty() and
diff_flush_patch() logic to ensure these headers were included even if
there was no associated content diff.

However, when the pickaxe is active, we really only want the remerge
conflict headers to be shown when there is an associated content diff.
Adjust the logic in these two functions accordingly.

This also removes the TEST_PASSES_SANITIZE_LEAK=true declaration from
t4069, as there is apparently some kind of memory leak with the pickaxe
code.

Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Elijah Newren 2022-09-02 03:53:29 +00:00 committed by Junio C Hamano
parent 9b08091cb7
commit 71a146dc70
2 changed files with 18 additions and 1 deletions
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2
diff.c
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@ -5869,6 +5869,7 @@ static void diff_flush_patch(struct diff_filepair *p, struct diff_options *o)
{
int include_conflict_headers =
(additional_headers(o, p->one->path) &&
!o->pickaxe_opts &&
(!o->filter || filter_bit_tst(DIFF_STATUS_UNMERGED, o)));
/*
@ -5924,6 +5925,7 @@ int diff_queue_is_empty(struct diff_options *o)
int i;
int include_conflict_headers =
(o->additional_path_headers &&
!o->pickaxe_opts &&
(!o->filter || filter_bit_tst(DIFF_STATUS_UNMERGED, o)));
if (include_conflict_headers)

17
t/t4069-remerge-diff.sh
View File

@ -2,7 +2,6 @@
test_description='remerge-diff handling'
TEST_PASSES_SANITIZE_LEAK=true
. ./test-lib.sh
# This test is ort-specific
@ -90,6 +89,22 @@ test_expect_success 'remerge-diff with both a resolved conflict and an unrelated
test_cmp expect actual
'
test_expect_success 'pickaxe still includes additional headers for relevant changes' '
# reuses "expect" from the previous testcase
git log --oneline --remerge-diff -Sacht ab_resolution >tmp &&
sed -e "s/[0-9a-f]\{7,\}/HASH/g" tmp >actual &&
test_cmp expect actual
'
test_expect_success 'can filter out additional headers with pickaxe' '
git show --remerge-diff --submodule=log --find-object=HEAD ab_resolution >actual &&
test_must_be_empty actual &&
git show --remerge-diff -S"not present" --all >actual &&
test_must_be_empty actual
'
test_expect_success 'setup non-content conflicts' '
git switch --orphan base &&