git/t/t8002-blame.sh
Thomas Gummerer bc6b13a7d2 blame: fix segfault on untracked files
Since 3b75ee9 ("blame: allow to blame paths freshly added to the index",
2016-07-16) git blame also looks at the index to determine if there is a
file that was freshly added to the index.

cache_name_pos returns -pos - 1 in case there is no match is found, or
if the name matches, but the entry has a stage other than 0.  As git
blame should work for unmerged files, it uses strcmp to determine
whether the name of the returned position matches, in which case the
file exists, but is merely unmerged, or if the file actually doesn't
exist in the index.

If the repository is empty, or if the file would lexicographically be
sorted as the last file in the repository, -cache_name_pos - 1 is
outside of the length of the active_cache array, causing git blame to
segfault.  Guard against that, and die() normally to restore the old
behaviour.

Reported-by: Simon Ruderich <simon@ruderich.org>
Signed-off-by: Thomas Gummerer <t.gummerer@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-08-29 11:57:33 -07:00

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#!/bin/sh
test_description='git blame'
. ./test-lib.sh
PROG='git blame -c'
. "$TEST_DIRECTORY"/annotate-tests.sh
test_expect_success 'blame untracked file in empty repo' '
>untracked &&
test_must_fail git blame untracked
'
PROG='git blame -c -e'
test_expect_success 'blame --show-email' '
check_count \
"<A@test.git>" 1 \
"<B@test.git>" 1 \
"<B1@test.git>" 1 \
"<B2@test.git>" 1 \
"<author@example.com>" 1 \
"<C@test.git>" 1 \
"<D@test.git>" 1 \
"<E at test dot git>" 1
'
test_expect_success 'setup showEmail tests' '
echo "bin: test number 1" >one &&
git add one &&
GIT_AUTHOR_NAME=name1 \
GIT_AUTHOR_EMAIL=email1@test.git \
git commit -m First --date="2010-01-01 01:00:00" &&
cat >expected_n <<-\EOF &&
(name1 2010-01-01 01:00:00 +0000 1) bin: test number 1
EOF
cat >expected_e <<-\EOF
(<email1@test.git> 2010-01-01 01:00:00 +0000 1) bin: test number 1
EOF
'
find_blame () {
sed -e 's/^[^(]*//'
}
test_expect_success 'blame with no options and no config' '
git blame one >blame &&
find_blame <blame >result &&
test_cmp expected_n result
'
test_expect_success 'blame with showemail options' '
git blame --show-email one >blame1 &&
find_blame <blame1 >result &&
test_cmp expected_e result &&
git blame -e one >blame2 &&
find_blame <blame2 >result &&
test_cmp expected_e result &&
git blame --no-show-email one >blame3 &&
find_blame <blame3 >result &&
test_cmp expected_n result
'
test_expect_success 'blame with showEmail config false' '
git config blame.showEmail false &&
git blame one >blame1 &&
find_blame <blame1 >result &&
test_cmp expected_n result &&
git blame --show-email one >blame2 &&
find_blame <blame2 >result &&
test_cmp expected_e result &&
git blame -e one >blame3 &&
find_blame <blame3 >result &&
test_cmp expected_e result &&
git blame --no-show-email one >blame4 &&
find_blame <blame4 >result &&
test_cmp expected_n result
'
test_expect_success 'blame with showEmail config true' '
git config blame.showEmail true &&
git blame one >blame1 &&
find_blame <blame1 >result &&
test_cmp expected_e result &&
git blame --no-show-email one >blame2 &&
find_blame <blame2 >result &&
test_cmp expected_n result
'
test_done