mirror of
https://github.com/git/git.git
synced 2024-11-26 03:14:50 +08:00
25d5ea410f
Earlier implementation had a major screw-up in the memory management area. Rename/copy logic sometimes borrowed a pointer to a structure without any provision for downstream to determine which pointer is shared and which is not. This resulted in the later clean-up code to sometimes double free such structure, resulting in a segfault. This made -M and -C useless. Another problem the earlier implementation had was that it reordered the patches, and forced the logic to differentiate renames and copies to depend on that particular order. This problem was fixed by teaching rename/copy detection logic not to do any reordering, and rename-copy differentiator not to depend on the order of the patches. The diffs will leave rename/copy detector in the same destination path order as the patch that was fed into it. Some test vectors have been reordered to accommodate this change. It also adds a sanity check logic to the human-readable diff-raw output to detect paths with embedded TAB and LF characters, which cannot be expressed with that format. This idea came up during a discussion with Chris Wedgwood. Signed-off-by: Junio C Hamano <junkio@cox.net> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
182 lines
5.8 KiB
Bash
182 lines
5.8 KiB
Bash
#!/bin/sh
|
|
#
|
|
# Copyright (c) 2005 Junio C Hamano
|
|
#
|
|
|
|
test_description='Same rename detection as t4003 but testing diff-raw.
|
|
|
|
'
|
|
. ./test-lib.sh
|
|
|
|
compare_diff_raw () {
|
|
# When heuristics are improved, the score numbers would change.
|
|
# Ignore them while comparing.
|
|
sed -e 's/ \([CR]\)[0-9]* /\1#/' <"$1" >.tmp-1
|
|
sed -e 's/ \([CR]\)[0-9]* /\1#/' <"$2" >.tmp-2
|
|
diff -u .tmp-1 .tmp-2 && rm -f .tmp-1 .tmp-2
|
|
}
|
|
|
|
compare_diff_patch () {
|
|
# When heuristics are improved, the score numbers would change.
|
|
# Ignore them while comparing.
|
|
sed -e '/^similarity index [0-9]*%$/d' <"$1" >.tmp-1
|
|
sed -e '/^similarity index [0-9]*%$/d' <"$2" >.tmp-2
|
|
diff -u .tmp-1 .tmp-2 && rm -f .tmp-1 .tmp-2
|
|
}
|
|
|
|
test_expect_success \
|
|
'prepare reference tree' \
|
|
'cat ../../COPYING >COPYING &&
|
|
echo frotz >rezrov &&
|
|
git-update-cache --add COPYING rezrov &&
|
|
tree=$(git-write-tree) &&
|
|
echo $tree'
|
|
|
|
test_expect_success \
|
|
'prepare work tree' \
|
|
'sed -e 's/HOWEVER/However/' <COPYING >COPYING.1 &&
|
|
sed -e 's/GPL/G.P.L/g' <COPYING >COPYING.2 &&
|
|
rm -f COPYING &&
|
|
git-update-cache --add --remove COPYING COPYING.?'
|
|
|
|
# tree has COPYING and rezrov. work tree has COPYING.1 and COPYING.2,
|
|
# both are slightly edited, and unchanged rezrov. We say COPYING.1
|
|
# and COPYING.2 are based on COPYING, and do not say anything about
|
|
# rezrov.
|
|
|
|
git-diff-cache -M $tree >current
|
|
|
|
cat >expected <<\EOF
|
|
:100644 100644 6ff87c4664981e4397625791c8ea3bbb5f2279a3 0603b3238a076dc6c8022aedc6648fa523a17178 C1234 COPYING COPYING.1
|
|
:100644 100644 6ff87c4664981e4397625791c8ea3bbb5f2279a3 06c67961bbaed34a127f76d261f4c0bf73eda471 R1234 COPYING COPYING.2
|
|
EOF
|
|
|
|
test_expect_success \
|
|
'validate output from rename/copy detection (#1)' \
|
|
'compare_diff_raw current expected'
|
|
|
|
# make sure diff-helper can grok it.
|
|
mv expected diff-raw
|
|
GIT_DIFF_OPTS=--unified=0 git-diff-helper <diff-raw >current
|
|
cat >expected <<\EOF
|
|
diff --git a/COPYING b/COPYING.1
|
|
copy from COPYING
|
|
copy to COPYING.1
|
|
--- a/COPYING
|
|
+++ b/COPYING.1
|
|
@@ -6 +6 @@
|
|
- HOWEVER, in order to allow a migration to GPLv3 if that seems like
|
|
+ However, in order to allow a migration to GPLv3 if that seems like
|
|
diff --git a/COPYING b/COPYING.2
|
|
rename old COPYING
|
|
rename new COPYING.2
|
|
--- a/COPYING
|
|
+++ b/COPYING.2
|
|
@@ -2 +2 @@
|
|
- Note that the only valid version of the GPL as far as this project
|
|
+ Note that the only valid version of the G.P.L as far as this project
|
|
@@ -6 +6 @@
|
|
- HOWEVER, in order to allow a migration to GPLv3 if that seems like
|
|
+ HOWEVER, in order to allow a migration to G.P.Lv3 if that seems like
|
|
@@ -12 +12 @@
|
|
- This file is licensed under the GPL v2, or a later version
|
|
+ This file is licensed under the G.P.L v2, or a later version
|
|
EOF
|
|
|
|
test_expect_success \
|
|
'validate output from diff-helper (#1)' \
|
|
'compare_diff_patch current expected'
|
|
|
|
################################################################
|
|
|
|
test_expect_success \
|
|
'prepare work tree again' \
|
|
'mv COPYING.2 COPYING &&
|
|
git-update-cache --add --remove COPYING COPYING.1 COPYING.2'
|
|
|
|
# tree has COPYING and rezrov. work tree has COPYING and COPYING.1,
|
|
# both are slightly edited, and unchanged rezrov. We say COPYING.1
|
|
# is based on COPYING and COPYING is still there, and do not say anything
|
|
# about rezrov.
|
|
|
|
git-diff-cache -C $tree >current
|
|
cat >expected <<\EOF
|
|
:100644 100644 6ff87c4664981e4397625791c8ea3bbb5f2279a3 06c67961bbaed34a127f76d261f4c0bf73eda471 M COPYING
|
|
:100644 100644 6ff87c4664981e4397625791c8ea3bbb5f2279a3 0603b3238a076dc6c8022aedc6648fa523a17178 C1234 COPYING COPYING.1
|
|
EOF
|
|
|
|
test_expect_success \
|
|
'validate output from rename/copy detection (#2)' \
|
|
'compare_diff_raw current expected'
|
|
|
|
test_expect_success \
|
|
'prepare work tree once again' \
|
|
'cat ../../COPYING >COPYING &&
|
|
git-update-cache --add --remove COPYING COPYING.1'
|
|
|
|
# make sure diff-helper can grok it.
|
|
mv expected diff-raw
|
|
GIT_DIFF_OPTS=--unified=0 git-diff-helper <diff-raw >current
|
|
cat >expected <<\EOF
|
|
diff --git a/COPYING b/COPYING
|
|
--- a/COPYING
|
|
+++ b/COPYING
|
|
@@ -2 +2 @@
|
|
- Note that the only valid version of the GPL as far as this project
|
|
+ Note that the only valid version of the G.P.L as far as this project
|
|
@@ -6 +6 @@
|
|
- HOWEVER, in order to allow a migration to GPLv3 if that seems like
|
|
+ HOWEVER, in order to allow a migration to G.P.Lv3 if that seems like
|
|
@@ -12 +12 @@
|
|
- This file is licensed under the GPL v2, or a later version
|
|
+ This file is licensed under the G.P.L v2, or a later version
|
|
diff --git a/COPYING b/COPYING.1
|
|
copy from COPYING
|
|
copy to COPYING.1
|
|
--- a/COPYING
|
|
+++ b/COPYING.1
|
|
@@ -6 +6 @@
|
|
- HOWEVER, in order to allow a migration to GPLv3 if that seems like
|
|
+ However, in order to allow a migration to GPLv3 if that seems like
|
|
EOF
|
|
|
|
test_expect_success \
|
|
'validate output from diff-helper (#2)' \
|
|
'compare_diff_patch current expected'
|
|
|
|
################################################################
|
|
|
|
# tree has COPYING and rezrov. work tree has the same COPYING and
|
|
# copy-edited COPYING.1, and unchanged rezrov. We should not say
|
|
# anything about rezrov nor COPYING, since the revised again diff-raw
|
|
# nows how to say Copy.
|
|
|
|
git-diff-cache -C $tree >current
|
|
cat >expected <<\EOF
|
|
:100644 100644 6ff87c4664981e4397625791c8ea3bbb5f2279a3 0603b3238a076dc6c8022aedc6648fa523a17178 C1234 COPYING COPYING.1
|
|
EOF
|
|
|
|
test_expect_success \
|
|
'validate output from rename/copy detection (#3)' \
|
|
'compare_diff_raw current expected'
|
|
|
|
# make sure diff-helper can grok it.
|
|
mv expected diff-raw
|
|
GIT_DIFF_OPTS=--unified=0 git-diff-helper <diff-raw >current
|
|
cat >expected <<\EOF
|
|
diff --git a/COPYING b/COPYING.1
|
|
copy from COPYING
|
|
copy to COPYING.1
|
|
--- a/COPYING
|
|
+++ b/COPYING.1
|
|
@@ -6 +6 @@
|
|
- HOWEVER, in order to allow a migration to GPLv3 if that seems like
|
|
+ However, in order to allow a migration to GPLv3 if that seems like
|
|
EOF
|
|
|
|
test_expect_success \
|
|
'validate output from diff-helper (#3)' \
|
|
'compare_diff_patch current expected'
|
|
|
|
test_done
|