From 49266e8a11cffa1bb41217021470e33d26109bb2 Mon Sep 17 00:00:00 2001 From: Felipe Contreras Date: Wed, 28 Nov 2012 23:23:59 +0100 Subject: [PATCH] fast-export: don't handle uninteresting refs They have been marked as UNINTERESTING for a reason, lets respect that. Currently the first ref is handled properly, but not the rest. Assuming that all the refs point at the same commit in the following example: % git fast-export master ^uninteresting ^foo ^bar reset refs/heads/bar from :0 reset refs/heads/foo from :0 reset refs/heads/uninteresting from :0 % git fast-export ^uninteresting ^foo ^bar master reset refs/heads/master from :0 reset refs/heads/bar from :0 reset refs/heads/foo from :0 Clearly this is wrong; the negative refs should be ignored. After this patch: % git fast-export ^uninteresting ^foo ^bar master # nothing % git fast-export master ^uninteresting ^foo ^bar # nothing And even more, it would only happen if the ref is pointing to exactly the same commit, but not otherwise: % git fast-export ^next next reset refs/heads/next from :0 % git fast-export ^next next^{commit} # nothing % git fast-export ^next next~0 # nothing % git fast-export ^next next~1 # nothing % git fast-export ^next next~2 # nothing The reason this happens is that before traversing the commits, fast-export checks if any of the refs point to the same object, and any duplicated ref gets added to a list in order to issue 'reset' commands after the traversing. Unfortunately, it's not even checking if the commit is flagged as UNINTERESTING. The fix of course, is to check it. However, in order to do it properly we need to get the UNINTERESTING flag from the command line, not from the commit object, because "^foo bar" will mark the commit 'bar' uninteresting if foo and bar points at the same commit. rev_cmdline_info, which was introduced exactly to handle this situation, contains all the information we need for get_tags_and_duplicates(), plus the ref flag. This way the rest of the positive refs will remain untouched; it's only the negative ones that change in behavior. Signed-off-by: Felipe Contreras Signed-off-by: Junio C Hamano --- builtin/fast-export.c | 11 +++++++---- t/t5801-remote-helpers.sh | 8 ++++++++ t/t9350-fast-export.sh | 30 ++++++++++++++++++++++++++++++ 3 files changed, 45 insertions(+), 4 deletions(-) diff --git a/builtin/fast-export.c b/builtin/fast-export.c index 191936c17..2547e6cb5 100644 --- a/builtin/fast-export.c +++ b/builtin/fast-export.c @@ -474,18 +474,21 @@ static void handle_tag(const char *name, struct tag *tag) (int)message_size, (int)message_size, message ? message : ""); } -static void get_tags_and_duplicates(struct object_array *pending, +static void get_tags_and_duplicates(struct rev_cmdline_info *info, struct string_list *extra_refs) { struct tag *tag; int i; - for (i = 0; i < pending->nr; i++) { - struct object_array_entry *e = pending->objects + i; + for (i = 0; i < info->nr; i++) { + struct rev_cmdline_entry *e = info->rev + i; unsigned char sha1[20]; struct commit *commit; char *full_name; + if (e->flags & UNINTERESTING) + continue; + if (dwim_ref(e->name, strlen(e->name), sha1, &full_name) != 1) continue; @@ -681,7 +684,7 @@ int cmd_fast_export(int argc, const char **argv, const char *prefix) if (import_filename && revs.prune_data.nr) full_tree = 1; - get_tags_and_duplicates(&revs.pending, &extra_refs); + get_tags_and_duplicates(&revs.cmdline, &extra_refs); if (prepare_revision_walk(&revs)) die("revision walk setup failed"); diff --git a/t/t5801-remote-helpers.sh b/t/t5801-remote-helpers.sh index 12ae25664..ece8fd5ab 100755 --- a/t/t5801-remote-helpers.sh +++ b/t/t5801-remote-helpers.sh @@ -162,4 +162,12 @@ test_expect_failure 'pushing without marks' ' compare_refs local2 HEAD server HEAD ' +test_expect_success 'push all with existing object' ' + (cd local && + git branch dup2 master && + git push origin --all + ) && + compare_refs local dup2 server dup2 +' + test_done diff --git a/t/t9350-fast-export.sh b/t/t9350-fast-export.sh index 1f598622a..c8e41c1d4 100755 --- a/t/t9350-fast-export.sh +++ b/t/t9350-fast-export.sh @@ -454,4 +454,34 @@ test_expect_success 'test bidirectionality' ' git fast-import --export-marks=marks-cur --import-marks=marks-cur ' +cat > expected << EOF +blob +mark :13 +data 5 +bump + +commit refs/heads/master +mark :14 +author A U Thor 1112912773 -0700 +committer C O Mitter 1112912773 -0700 +data 5 +bump +from :12 +M 100644 :13 file + +EOF + +test_expect_success 'avoid uninteresting refs' ' + > tmp-marks && + git fast-export --import-marks=tmp-marks \ + --export-marks=tmp-marks master > /dev/null && + git tag v1.0 && + git branch uninteresting && + echo bump > file && + git commit -a -m bump && + git fast-export --import-marks=tmp-marks \ + --export-marks=tmp-marks ^uninteresting ^v1.0 master > actual && + test_cmp expected actual +' + test_done -- 2.26.2