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Merge branch 'cb/maint-merge-recursive-fix' into maint

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* cb/maint-merge-recursive-fix:
  merge-recursive: do not clobber untracked working tree garbage
  modify/delete conflict resolution overwrites untracked file

Conflicts:
	builtin-merge-recursive.c
This commit is contained in:
Junio C Hamano 2009-01-13 01:13:56 -08:00
commit 9e8f6e7f6e
2 changed files with 119 additions and 0 deletions
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32
merge-recursive.c
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@ -447,6 +447,30 @@ static void flush_buffer(int fd, const char *buf, unsigned long size)
}
}
static int would_lose_untracked(const char *path)
{
int pos = cache_name_pos(path, strlen(path));
if (pos < 0)
pos = -1 - pos;
while (pos < active_nr &&
!strcmp(path, active_cache[pos]->name)) {
/*
* If stage #0, it is definitely tracked.
* If it has stage #2 then it was tracked
* before this merge started. All other
* cases the path was not tracked.
*/
switch (ce_stage(active_cache[pos])) {
case 0:
case 2:
return 0;
}
pos++;
}
return file_exists(path);
}
static int make_room_for_path(const char *path)
{
int status;
@ -462,6 +486,14 @@ static int make_room_for_path(const char *path)
die(msg, path, "");
}
/*
* Do not unlink a file in the work tree if we are not
* tracking it.
*/
if (would_lose_untracked(path))
return error("refusing to lose untracked file at '%s'",
path);
/* Successful unlink is good.. */
if (!unlink(path))
return 0;

87
t/t7607-merge-overwrite.sh Executable file
View File

@ -0,0 +1,87 @@
#!/bin/sh
test_description='git-merge
Do not overwrite changes.'
. ./test-lib.sh
test_expect_success 'setup' '
echo c0 > c0.c &&
git add c0.c &&
git commit -m c0 &&
git tag c0 &&
echo c1 > c1.c &&
git add c1.c &&
git commit -m c1 &&
git tag c1 &&
git reset --hard c0 &&
echo c2 > c2.c &&
git add c2.c &&
git commit -m c2 &&
git tag c2 &&
git reset --hard c1 &&
echo "c1 a" > c1.c &&
git add c1.c &&
git commit -m "c1 a" &&
git tag c1a &&
echo "VERY IMPORTANT CHANGES" > important
'
test_expect_success 'will not overwrite untracked file' '
git reset --hard c1 &&
cat important > c2.c &&
! git merge c2 &&
test_cmp important c2.c
'
test_expect_success 'will not overwrite new file' '
git reset --hard c1 &&
cat important > c2.c &&
git add c2.c &&
! git merge c2 &&
test_cmp important c2.c
'
test_expect_success 'will not overwrite staged changes' '
git reset --hard c1 &&
cat important > c2.c &&
git add c2.c &&
rm c2.c &&
! git merge c2 &&
git checkout c2.c &&
test_cmp important c2.c
'
test_expect_success 'will not overwrite removed file' '
git reset --hard c1 &&
git rm c1.c &&
git commit -m "rm c1.c" &&
cat important > c1.c &&
! git merge c1a &&
test_cmp important c1.c
'
test_expect_success 'will not overwrite re-added file' '
git reset --hard c1 &&
git rm c1.c &&
git commit -m "rm c1.c" &&
cat important > c1.c &&
git add c1.c &&
! git merge c1a &&
test_cmp important c1.c
'
test_expect_success 'will not overwrite removed file with staged changes' '
git reset --hard c1 &&
git rm c1.c &&
git commit -m "rm c1.c" &&
cat important > c1.c &&
git add c1.c &&
rm c1.c &&
! git merge c1a &&
git checkout c1.c &&
test_cmp important c1.c
'
test_done