thodg/libgit2/tests/blame/simple.c
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Hash : add17435
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Date : 2019-05-24T15:24:26
cache: fix cache eviction using deallocated key When evicting cache entries, we first retrieve the object that is to be evicted, delete the object and then finally delete the key from the cache. In case where the cache eviction caused us to free the cached object, though, its key will point to invalid memory now when trying to remove it from the cache map. On my system, this causes us to not properly remove the key from the map, as its memory has been overwritten already and thus the key lookup it will fail and we cannot delete it. Fix this by only decrementing the refcount of the evictee after we have removed it from our cache map. Add a test that caused a segfault previous to that change.
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tests/blame/simple.c
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#include "blame_helpers.h" static git_repository *g_repo; static git_blame *g_blame; void test_blame_simple__initialize(void) { g_repo = NULL; g_blame = NULL; } void test_blame_simple__cleanup(void) { git_blame_free(g_blame); git_repository_free(g_repo); } /* * $ git blame -s branch_file.txt * orig line no final line no * commit V author timestamp V * c47800c7 1 (Scott Chacon 2010-05-25 11:58:14 -0700 1 * a65fedf3 2 (Scott Chacon 2011-08-09 19:33:46 -0700 2 */ void test_blame_simple__trivial_testrepo(void) { cl_git_pass(git_repository_open(&g_repo, cl_fixture("testrepo/.gitted"))); cl_git_pass(git_blame_file(&g_blame, g_repo, "branch_file.txt", NULL)); cl_assert_equal_i(2, git_blame_get_hunk_count(g_blame)); check_blame_hunk_index(g_repo, g_blame, 0, 1, 1, 0, "c47800c7", "branch_file.txt"); check_blame_hunk_index(g_repo, g_blame, 1, 2, 1, 0, "a65fedf3", "branch_file.txt"); } /* * $ git blame -n b.txt * orig line no final line no * commit V author timestamp V * da237394 1 (Ben Straub 2013-02-12 15:11:30 -0800 1 * da237394 2 (Ben Straub 2013-02-12 15:11:30 -0800 2 * da237394 3 (Ben Straub 2013-02-12 15:11:30 -0800 3 * da237394 4 (Ben Straub 2013-02-12 15:11:30 -0800 4 * ^b99f7ac 1 (Ben Straub 2013-02-12 15:10:12 -0800 5 * 63d671eb 6 (Ben Straub 2013-02-12 15:13:04 -0800 6 * 63d671eb 7 (Ben Straub 2013-02-12 15:13:04 -0800 7 * 63d671eb 8 (Ben Straub 2013-02-12 15:13:04 -0800 8 * 63d671eb 9 (Ben Straub 2013-02-12 15:13:04 -0800 9 * 63d671eb 10 (Ben Straub 2013-02-12 15:13:04 -0800 10 * aa06ecca 6 (Ben Straub 2013-02-12 15:14:46 -0800 11 * aa06ecca 7 (Ben Straub 2013-02-12 15:14:46 -0800 12 * aa06ecca 8 (Ben Straub 2013-02-12 15:14:46 -0800 13 * aa06ecca 9 (Ben Straub 2013-02-12 15:14:46 -0800 14 * aa06ecca 10 (Ben Straub 2013-02-12 15:14:46 -0800 15 */ void test_blame_simple__trivial_blamerepo(void) { cl_git_pass(git_repository_open(&g_repo, cl_fixture("blametest.git"))); cl_git_pass(git_blame_file(&g_blame, g_repo, "b.txt", NULL)); cl_assert_equal_i(4, git_blame_get_hunk_count(g_blame)); check_blame_hunk_index(g_repo, g_blame, 0, 1, 4, 0, "da237394", "b.txt"); check_blame_hunk_index(g_repo, g_blame, 1, 5, 1, 1, "b99f7ac0", "b.txt"); check_blame_hunk_index(g_repo, g_blame, 2, 6, 5, 0, "63d671eb", "b.txt"); check_blame_hunk_index(g_repo, g_blame, 3, 11, 5, 0, "aa06ecca", "b.txt"); } /* * $ git blame -n 359fc2d -- include/git2.h * orig line no final line no * commit orig path V author timestamp V * d12299fe src/git.h 1 (Vicent Martí 2010-12-03 22:22:10 +0200 1 * 359fc2d2 include/git2.h 2 (Edward Thomson 2013-01-08 17:07:25 -0600 2 * d12299fe src/git.h 5 (Vicent Martí 2010-12-03 22:22:10 +0200 3 * bb742ede include/git2.h 4 (Vicent Martí 2011-09-19 01:54:32 +0300 4 * bb742ede include/git2.h 5 (Vicent Martí 2011-09-19 01:54:32 +0300 5 * d12299fe src/git.h 24 (Vicent Martí 2010-12-03 22:22:10 +0200 6 * d12299fe src/git.h 25 (Vicent Martí 2010-12-03 22:22:10 +0200 7 * d12299fe src/git.h 26 (Vicent Martí 2010-12-03 22:22:10 +0200 8 * d12299fe src/git.h 27 (Vicent Martí 2010-12-03 22:22:10 +0200 9 * d12299fe src/git.h 28 (Vicent Martí 2010-12-03 22:22:10 +0200 10 * 96fab093 include/git2.h 11 (Sven Strickroth 2011-10-09 18:37:41 +0200 11 * 9d1dcca2 src/git2.h 33 (Vicent Martí 2011-02-07 10:35:58 +0200 12 * 44908fe7 src/git2.h 29 (Vicent Martí 2010-12-06 23:03:16 +0200 13 * a15c550d include/git2.h 14 (Vicent Martí 2011-11-16 14:09:44 +0100 14 * 44908fe7 src/git2.h 30 (Vicent Martí 2010-12-06 23:03:16 +0200 15 * d12299fe src/git.h 32 (Vicent Martí 2010-12-03 22:22:10 +0200 16 * 44908fe7 src/git2.h 33 (Vicent Martí 2010-12-06 23:03:16 +0200 17 * d12299fe src/git.h 34 (Vicent Martí 2010-12-03 22:22:10 +0200 18 * 44908fe7 src/git2.h 35 (Vicent Martí 2010-12-06 23:03:16 +0200 19 * 638c2ca4 src/git2.h 36 (Vicent Martí 2010-12-18 02:10:25 +0200 20 * 44908fe7 src/git2.h 36 (Vicent Martí 2010-12-06 23:03:16 +0200 21 * d12299fe src/git.h 37 (Vicent Martí 2010-12-03 22:22:10 +0200 22 * 44908fe7 src/git2.h 38 (Vicent Martí 2010-12-06 23:03:16 +0200 23 * 44908fe7 src/git2.h 39 (Vicent Martí 2010-12-06 23:03:16 +0200 24 * bf787bd8 include/git2.h 25 (Carlos Martín Nieto 2012-04-08 18:56:50 +0200 25 * 0984c876 include/git2.h 26 (Scott J. Goldman 2012-11-28 18:27:43 -0800 26 * 2f8a8ab2 src/git2.h 41 (Vicent Martí 2011-01-29 01:56:25 +0200 27 * 27df4275 include/git2.h 47 (Michael Schubert 2011-06-28 14:13:12 +0200 28 * a346992f include/git2.h 28 (Ben Straub 2012-05-10 09:47:14 -0700 29 * d12299fe src/git.h 40 (Vicent Martí 2010-12-03 22:22:10 +0200 30 * 44908fe7 src/git2.h 41 (Vicent Martí 2010-12-06 23:03:16 +0200 31 * 44908fe7 src/git2.h 42 (Vicent Martí 2010-12-06 23:03:16 +0200 32 * 44908fe7 src/git2.h 43 (Vicent Martí 2010-12-06 23:03:16 +0200 33 * 44908fe7 src/git2.h 44 (Vicent Martí 2010-12-06 23:03:16 +0200 34 * 44908fe7 src/git2.h 45 (Vicent Martí 2010-12-06 23:03:16 +0200 35 * 65b09b1d include/git2.h 33 (Russell Belfer 2012-02-02 18:03:43 -0800 36 * d12299fe src/git.h 46 (Vicent Martí 2010-12-03 22:22:10 +0200 37 * 44908fe7 src/git2.h 47 (Vicent Martí 2010-12-06 23:03:16 +0200 38 * 5d4cd003 include/git2.h 55 (Carlos Martín Nieto 2011-03-28 17:02:45 +0200 39 * 41fb1ca0 include/git2.h 39 (Philip Kelley 2012-10-29 13:41:14 -0400 40 * 2dc31040 include/git2.h 56 (Carlos Martín Nieto 2011-06-20 18:58:57 +0200 41 * 764df57e include/git2.h 40 (Ben Straub 2012-06-15 13:14:43 -0700 42 * 5280f4e6 include/git2.h 41 (Ben Straub 2012-07-31 19:39:06 -0700 43 * 613d5eb9 include/git2.h 43 (Philip Kelley 2012-11-28 11:42:37 -0500 44 * d12299fe src/git.h 48 (Vicent Martí 2010-12-03 22:22:10 +0200 45 * 111ee3fe include/git2.h 41 (Vicent Martí 2012-07-11 14:37:26 +0200 46 * f004c4a8 include/git2.h 44 (Russell Belfer 2012-08-21 17:26:39 -0700 47 * 111ee3fe include/git2.h 42 (Vicent Martí 2012-07-11 14:37:26 +0200 48 * 9c82357b include/git2.h 58 (Carlos Martín Nieto 2011-06-17 18:13:14 +0200 49 * d6258deb include/git2.h 61 (Carlos Martín Nieto 2011-06-25 15:10:09 +0200 50 * b311e313 include/git2.h 63 (Julien Miotte 2011-07-27 18:31:13 +0200 51 * 3412391d include/git2.h 63 (Carlos Martín Nieto 2011-07-07 11:47:31 +0200 52 * bfc9ca59 include/git2.h 43 (Russell Belfer 2012-03-28 16:45:36 -0700 53 * bf477ed4 include/git2.h 44 (Michael Schubert 2012-02-15 00:33:38 +0100 54 * edebceff include/git2.h 46 (nulltoken 2012-05-01 13:57:45 +0200 55 * 743a4b3b include/git2.h 48 (nulltoken 2012-06-15 22:24:59 +0200 56 * 0a32dca5 include/git2.h 54 (Michael Schubert 2012-08-19 22:26:32 +0200 57 * 590fb68b include/git2.h 55 (nulltoken 2012-10-04 13:47:45 +0200 58 * bf477ed4 include/git2.h 45 (Michael Schubert 2012-02-15 00:33:38 +0100 59 * d12299fe src/git.h 49 (Vicent Martí 2010-12-03 22:22:10 +0200 60 */ void test_blame_simple__trivial_libgit2(void) { git_blame_options opts = GIT_BLAME_OPTIONS_INIT; git_object *obj; /* If we can't open the libgit2 repo or if it isn't a full repo * with proper history, just skip this test */ if (git_repository_open(&g_repo, cl_fixture("../..")) < 0) cl_skip(); if (git_repository_is_shallow(g_repo)) cl_skip(); if (git_revparse_single(&obj, g_repo, "359fc2d") < 0) cl_skip(); git_oid_cpy(&opts.newest_commit, git_object_id(obj)); git_object_free(obj); cl_git_pass(git_blame_file(&g_blame, g_repo, "include/git2.h", &opts)); check_blame_hunk_index(g_repo, g_blame, 0, 1, 1, 0, "d12299fe", "src/git.h"); check_blame_hunk_index(g_repo, g_blame, 1, 2, 1, 0, "359fc2d2", "include/git2.h"); check_blame_hunk_index(g_repo, g_blame, 2, 3, 1, 0, "d12299fe", "src/git.h"); check_blame_hunk_index(g_repo, g_blame, 3, 4, 2, 0, "bb742ede", "include/git2.h"); check_blame_hunk_index(g_repo, g_blame, 4, 6, 5, 0, "d12299fe", "src/git.h"); check_blame_hunk_index(g_repo, g_blame, 5, 11, 1, 0, "96fab093", "include/git2.h"); check_blame_hunk_index(g_repo, g_blame, 6, 12, 1, 0, "9d1dcca2", "src/git2.h"); check_blame_hunk_index(g_repo, g_blame, 7, 13, 1, 0, "44908fe7", "src/git2.h"); check_blame_hunk_index(g_repo, g_blame, 8, 14, 1, 0, "a15c550d", "include/git2.h"); check_blame_hunk_index(g_repo, g_blame, 9, 15, 1, 0, "44908fe7", "src/git2.h"); check_blame_hunk_index(g_repo, g_blame, 10, 16, 1, 0, "d12299fe", "src/git.h"); check_blame_hunk_index(g_repo, g_blame, 11, 17, 1, 0, "44908fe7", "src/git2.h"); check_blame_hunk_index(g_repo, g_blame, 12, 18, 1, 0, "d12299fe", "src/git.h"); check_blame_hunk_index(g_repo, g_blame, 13, 19, 1, 0, "44908fe7", "src/git2.h"); check_blame_hunk_index(g_repo, g_blame, 14, 20, 1, 0, "638c2ca4", "src/git2.h"); check_blame_hunk_index(g_repo, g_blame, 15, 21, 1, 0, "44908fe7", "src/git2.h"); check_blame_hunk_index(g_repo, g_blame, 16, 22, 1, 0, "d12299fe", "src/git.h"); check_blame_hunk_index(g_repo, g_blame, 17, 23, 2, 0, "44908fe7", "src/git2.h"); check_blame_hunk_index(g_repo, g_blame, 18, 25, 1, 0, "bf787bd8", "include/git2.h"); check_blame_hunk_index(g_repo, g_blame, 19, 26, 1, 0, "0984c876", "include/git2.h"); check_blame_hunk_index(g_repo, g_blame, 20, 27, 1, 0, "2f8a8ab2", "src/git2.h"); check_blame_hunk_index(g_repo, g_blame, 21, 28, 1, 0, "27df4275", "include/git2.h"); check_blame_hunk_index(g_repo, g_blame, 22, 29, 1, 0, "a346992f", "include/git2.h"); check_blame_hunk_index(g_repo, g_blame, 23, 30, 1, 0, "d12299fe", "src/git.h"); check_blame_hunk_index(g_repo, g_blame, 24, 31, 5, 0, "44908fe7", "src/git2.h"); check_blame_hunk_index(g_repo, g_blame, 25, 36, 1, 0, "65b09b1d", "include/git2.h"); check_blame_hunk_index(g_repo, g_blame, 26, 37, 1, 0, "d12299fe", "src/git.h"); check_blame_hunk_index(g_repo, g_blame, 27, 38, 1, 0, "44908fe7", "src/git2.h"); check_blame_hunk_index(g_repo, g_blame, 28, 39, 1, 0, "5d4cd003", "include/git2.h"); check_blame_hunk_index(g_repo, g_blame, 29, 40, 1, 0, "41fb1ca0", "include/git2.h"); check_blame_hunk_index(g_repo, g_blame, 30, 41, 1, 0, "2dc31040", "include/git2.h"); check_blame_hunk_index(g_repo, g_blame, 31, 42, 1, 0, "764df57e", "include/git2.h"); check_blame_hunk_index(g_repo, g_blame, 32, 43, 1, 0, "5280f4e6", "include/git2.h"); check_blame_hunk_index(g_repo, g_blame, 33, 44, 1, 0, "613d5eb9", "include/git2.h"); check_blame_hunk_index(g_repo, g_blame, 34, 45, 1, 0, "d12299fe", "src/git.h"); check_blame_hunk_index(g_repo, g_blame, 35, 46, 1, 0, "111ee3fe", "include/git2.h"); check_blame_hunk_index(g_repo, g_blame, 36, 47, 1, 0, "f004c4a8", "include/git2.h"); check_blame_hunk_index(g_repo, g_blame, 37, 48, 1, 0, "111ee3fe", "include/git2.h"); check_blame_hunk_index(g_repo, g_blame, 38, 49, 1, 0, "9c82357b", "include/git2.h"); check_blame_hunk_index(g_repo, g_blame, 39, 50, 1, 0, "d6258deb", "include/git2.h"); check_blame_hunk_index(g_repo, g_blame, 40, 51, 1, 0, "b311e313", "include/git2.h"); check_blame_hunk_index(g_repo, g_blame, 41, 52, 1, 0, "3412391d", "include/git2.h"); check_blame_hunk_index(g_repo, g_blame, 42, 53, 1, 0, "bfc9ca59", "include/git2.h"); check_blame_hunk_index(g_repo, g_blame, 43, 54, 1, 0, "bf477ed4", "include/git2.h"); check_blame_hunk_index(g_repo, g_blame, 44, 55, 1, 0, "edebceff", "include/git2.h"); check_blame_hunk_index(g_repo, g_blame, 45, 56, 1, 0, "743a4b3b", "include/git2.h"); check_blame_hunk_index(g_repo, g_blame, 46, 57, 1, 0, "0a32dca5", "include/git2.h"); check_blame_hunk_index(g_repo, g_blame, 47, 58, 1, 0, "590fb68b", "include/git2.h"); check_blame_hunk_index(g_repo, g_blame, 48, 59, 1, 0, "bf477ed4", "include/git2.h"); check_blame_hunk_index(g_repo, g_blame, 49, 60, 1, 0, "d12299fe", "src/git.h"); } /* This was leading to segfaults on some systems during cache eviction. */ void test_blame_simple__trivial_libgit2_under_cache_pressure(void) { ssize_t old_max_storage = git_cache__max_storage; git_cache__max_storage = 1024 * 1024; test_blame_simple__trivial_libgit2(); git_cache__max_storage = old_max_storage; } /* * $ git blame -n b.txt -L 8 * orig line no final line no * commit V author timestamp V * 63d671eb 8 (Ben Straub 2013-02-12 15:13:04 -0800 8 * 63d671eb 9 (Ben Straub 2013-02-12 15:13:04 -0800 9 * 63d671eb 10 (Ben Straub 2013-02-12 15:13:04 -0800 10 * aa06ecca 6 (Ben Straub 2013-02-12 15:14:46 -0800 11 * aa06ecca 7 (Ben Straub 2013-02-12 15:14:46 -0800 12 * aa06ecca 8 (Ben Straub 2013-02-12 15:14:46 -0800 13 * aa06ecca 9 (Ben Straub 2013-02-12 15:14:46 -0800 14 * aa06ecca 10 (Ben Straub 2013-02-12 15:14:46 -0800 15 */ void test_blame_simple__can_restrict_lines_min(void) { git_blame_options opts = GIT_BLAME_OPTIONS_INIT; cl_git_pass(git_repository_open(&g_repo, cl_fixture("blametest.git"))); opts.min_line = 8; cl_git_pass(git_blame_file(&g_blame, g_repo, "b.txt", &opts)); cl_assert_equal_i(2, git_blame_get_hunk_count(g_blame)); check_blame_hunk_index(g_repo, g_blame, 0, 8, 3, 0, "63d671eb", "b.txt"); check_blame_hunk_index(g_repo, g_blame, 1, 11, 5, 0, "aa06ecca", "b.txt"); } /* * $ git blame -n b.txt -L ,6 * orig line no final line no * commit V author timestamp V * da237394 1 (Ben Straub 2013-02-12 15:11:30 -0800 1 * da237394 2 (Ben Straub 2013-02-12 15:11:30 -0800 2 * da237394 3 (Ben Straub 2013-02-12 15:11:30 -0800 3 * da237394 4 (Ben Straub 2013-02-12 15:11:30 -0800 4 * ^b99f7ac 1 (Ben Straub 2013-02-12 15:10:12 -0800 5 * 63d671eb 6 (Ben Straub 2013-02-12 15:13:04 -0800 6 */ void test_blame_simple__can_restrict_lines_max(void) { git_blame_options opts = GIT_BLAME_OPTIONS_INIT; cl_git_pass(git_repository_open(&g_repo, cl_fixture("blametest.git"))); opts.max_line = 6; cl_git_pass(git_blame_file(&g_blame, g_repo, "b.txt", &opts)); cl_assert_equal_i(3, git_blame_get_hunk_count(g_blame)); check_blame_hunk_index(g_repo, g_blame, 0, 1, 4, 0, "da237394", "b.txt"); check_blame_hunk_index(g_repo, g_blame, 1, 5, 1, 1, "b99f7ac0", "b.txt"); check_blame_hunk_index(g_repo, g_blame, 2, 6, 1, 0, "63d671eb", "b.txt"); } /* * $ git blame -n b.txt -L 2,7 * orig line no final line no * commit V author timestamp V * da237394 2 (Ben Straub 2013-02-12 15:11:30 -0800 2 * da237394 3 (Ben Straub 2013-02-12 15:11:30 -0800 3 * da237394 4 (Ben Straub 2013-02-12 15:11:30 -0800 4 * ^b99f7ac 1 (Ben Straub 2013-02-12 15:10:12 -0800 5 * 63d671eb 6 (Ben Straub 2013-02-12 15:13:04 -0800 6 * 63d671eb 7 (Ben Straub 2013-02-12 15:13:04 -0800 7 */ void test_blame_simple__can_restrict_lines_both(void) { git_blame_options opts = GIT_BLAME_OPTIONS_INIT; cl_git_pass(git_repository_open(&g_repo, cl_fixture("blametest.git"))); opts.min_line = 2; opts.max_line = 7; cl_git_pass(git_blame_file(&g_blame, g_repo, "b.txt", &opts)); cl_assert_equal_i(3, git_blame_get_hunk_count(g_blame)); check_blame_hunk_index(g_repo, g_blame, 0, 2, 3, 0, "da237394", "b.txt"); check_blame_hunk_index(g_repo, g_blame, 1, 5, 1, 1, "b99f7ac0", "b.txt"); check_blame_hunk_index(g_repo, g_blame, 2, 6, 2, 0, "63d671eb", "b.txt"); } void test_blame_simple__can_blame_huge_file(void) { git_blame_options opts = GIT_BLAME_OPTIONS_INIT; cl_git_pass(git_repository_open(&g_repo, cl_fixture("blametest.git"))); cl_git_pass(git_blame_file(&g_blame, g_repo, "huge.txt", &opts)); cl_assert_equal_i(2, git_blame_get_hunk_count(g_blame)); check_blame_hunk_index(g_repo, g_blame, 0, 1, 65536, 0, "4eecfea", "huge.txt"); check_blame_hunk_index(g_repo, g_blame, 1, 65537, 1, 0, "6653ff4", "huge.txt"); } /* * $ git blame -n branch_file.txt be3563a..HEAD * orig line no final line no * commit V author timestamp V * ^be3563a 1 (Scott Chacon 2010-05-25 11:58:27 -0700 1) hi * a65fedf3 2 (Scott Chacon 2011-08-09 19:33:46 -0700 2) bye! */ void test_blame_simple__can_restrict_to_newish_commits(void) { git_blame_options opts = GIT_BLAME_OPTIONS_INIT; cl_git_pass(git_repository_open(&g_repo, cl_fixture("testrepo.git"))); { git_object *obj; cl_git_pass(git_revparse_single(&obj, g_repo, "be3563a")); git_oid_cpy(&opts.oldest_commit, git_object_id(obj)); git_object_free(obj); } cl_git_pass(git_blame_file(&g_blame, g_repo, "branch_file.txt", &opts)); cl_assert_equal_i(2, git_blame_get_hunk_count(g_blame)); check_blame_hunk_index(g_repo, g_blame, 0, 1, 1, 1, "be3563a", "branch_file.txt"); check_blame_hunk_index(g_repo, g_blame, 1, 2, 1, 0, "a65fedf", "branch_file.txt"); } void test_blame_simple__can_restrict_to_first_parent_commits(void) { git_blame_options opts = GIT_BLAME_OPTIONS_INIT; opts.flags |= GIT_BLAME_FIRST_PARENT; cl_git_pass(git_repository_open(&g_repo, cl_fixture("blametest.git"))); cl_git_pass(git_blame_file(&g_blame, g_repo, "b.txt", &opts)); cl_assert_equal_i(4, git_blame_get_hunk_count(g_blame)); check_blame_hunk_index(g_repo, g_blame, 0, 1, 4, 0, "da237394", "b.txt"); check_blame_hunk_index(g_repo, g_blame, 1, 5, 1, 1, "b99f7ac0", "b.txt"); check_blame_hunk_index(g_repo, g_blame, 2, 6, 5, 0, "63d671eb", "b.txt"); check_blame_hunk_index(g_repo, g_blame, 3, 11, 5, 0, "bc7c5ac2", "b.txt"); }