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repository: set error message if trying to set HEAD to a checked out one

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If trying to set the HEAD of a repository to another reference, we have
to check whether this reference is already checked out in another linked
work tree. If it is, we will refuse setting the HEAD and return an
error, but do not set a meaningful error message. Add one.
This commit is contained in:
Patrick Steinhardt 2017-04-04 18:18:45 +02:00
parent 5b65ac2578
commit 8242cc1a23
1 changed files with 2 additions and 0 deletions
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src/repository.c
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@ -2562,6 +2562,8 @@ int git_repository_set_head(
if (ref && current->type == GIT_REF_SYMBOLIC && git__strcmp(current->target.symbolic, ref->name) &&
git_reference_is_branch(ref) && git_branch_is_checked_out(ref)) {
giterr_set(GITERR_REPOSITORY, "cannot set HEAD to reference '%s' as it is the current HEAD "
"of a linked repository.", git_reference_name(ref));
error = -1;
goto cleanup;
}