[PATCH 1/2] alter hash function: expose test dependencies on sha1

[Stefan Beller <sbeller@google.com>]

DO NOT APPLY.

Alter the hash function such that with this patch
any dependency on sha1 in tests will make the test
fail. This patch applied on master yields this list:

./t0000-basic.sh
./t0002-gitfile.sh
./t0005-signals.sh
./t0013-sha1dc.sh
./t0021-conversion.sh
./t0090-cache-tree.sh
./t1001-read-tree-m-2way.sh
./t1007-hash-object.sh
./t1011-read-tree-sparse-checkout.sh
./t1013-read-tree-submodule.sh
./t1100-commit-tree-options.sh
./t1200-tutorial.sh
./t1300-repo-config.sh
./t1304-default-acl.sh
./t1400-update-ref.sh
./t1411-reflog-show.sh
./t1450-fsck.sh
./t1507-rev-parse-upstream.sh
./t1512-rev-parse-disambiguation.sh
./t1700-split-index.sh
./t2011-checkout-invalid-head.sh
./t2013-checkout-submodule.sh
./t2015-checkout-unborn.sh
./t2017-checkout-orphan.sh
./t2022-checkout-paths.sh
./t2101-update-index-reupdate.sh
./t2107-update-index-basic.sh
./t2203-add-intent.sh
./t3033-merge-toplevel.sh
./t3102-ls-tree-wildcards.sh
./t3103-ls-tree-misc.sh
./t3201-branch-contains.sh
./t3301-notes.sh
./t3305-notes-fanout.sh
./t3306-notes-prune.sh
./t3308-notes-merge.sh
./t3309-notes-merge-auto-resolve.sh
./t3310-notes-merge-manual-resolve.sh
./t3311-notes-merge-fanout.sh
./t3400-rebase.sh
./t3404-rebase-interactive.sh
./t3405-rebase-malformed.sh
./t3408-rebase-multi-line.sh
./t3415-rebase-autosquash.sh
./t3419-rebase-patch-id.sh
./t3421-rebase-topology-linear.sh
./t3501-revert-cherry-pick.sh
./t3502-cherry-pick-merge.sh
./t3503-cherry-pick-root.sh
./t3506-cherry-pick-ff.sh
./t3509-cherry-pick-merge-df.sh
./t3600-rm.sh
./t3700-add.sh
./t3701-add-interactive.sh
./t3702-add-edit.sh
./t3903-stash.sh
./t3905-stash-include-untracked.sh
./t4002-diff-basic.sh
./t4007-rename-3.sh
./t4008-diff-break-rewrite.sh
./t4010-diff-pathspec.sh
./t4011-diff-symlink.sh
./t4013-diff-various.sh
./t4014-format-patch.sh
./t4015-diff-whitespace.sh
./t4020-diff-external.sh
./t4022-diff-rewrite.sh
./t4029-diff-trailing-space.sh
./t4030-diff-textconv.sh
./t4033-diff-patience.sh
./t4034-diff-words.sh
./t4039-diff-assume-unchanged.sh
./t4042-diff-textconv-caching.sh
./t4044-diff-index-unique-abbrev.sh
./t4045-diff-relative.sh
./t4048-diff-combined-binary.sh
./t4050-diff-histogram.sh
./t4052-stat-output.sh
./t4054-diff-bogus-tree.sh
./t4060-diff-submodule-option-diff-format.sh
./t4126-apply-empty.sh
./t4151-am-abort.sh
./t4202-log.sh
./t4205-log-pretty-formats.sh
./t4208-log-magic-pathspec.sh
./t4211-line-log.sh
./t4300-merge-tree.sh
./t5150-request-pull.sh
./t5300-pack-object.sh
./t5306-pack-nobase.sh
./t5308-pack-detect-duplicates.sh
./t5309-pack-delta-cycles.sh
./t5313-pack-bounds-checks.sh
./t5512-ls-remote.sh
./t5515-fetch-merge-logic.sh
./t5516-fetch-push.sh
./t5520-pull.sh
./t5521-pull-options.sh
./t6000-rev-list-misc.sh
./t6012-rev-list-simplify.sh
./t6020-merge-df.sh
./t6022-merge-rename.sh
./t6024-recursive-merge.sh
./t6030-bisect-porcelain.sh
./t6031-merge-filemode.sh
./t6035-merge-dir-to-symlink.sh
./t6300-for-each-ref.sh
./t6500-gc.sh
./t7003-filter-branch.sh
./t7012-skip-worktree-writing.sh
./t7063-status-untracked-cache.sh
./t7102-reset.sh
./t7106-reset-unborn-branch.sh
./t7112-reset-submodule.sh
./t7201-co.sh
./t7400-submodule-basic.sh
./t7506-status-submodule.sh
./t7507-commit-verbose.sh
./t7508-status.sh
./t7600-merge.sh
./t7607-merge-overwrite.sh
./t7609-merge-co-error-msgs.sh
./t8008-blame-formats.sh

Signed-off-by: Stefan Beller <sbeller@google.com>
---
 sha1dc/sha1.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sha1dc/sha1.c b/sha1dc/sha1.c
index 25eded1399..e18acee9ca 100644
--- a/sha1dc/sha1.c
+++ b/sha1dc/sha1.c
@@ -1756,7 +1756,7 @@ static void sha1_process(SHA1_CTX* ctx, const uint32_t block[16])
 void SHA1DCInit(SHA1_CTX* ctx)
 {
 	ctx->total = 0;
-	ctx->ihv[0] = 0x67452301;
+	ctx->ihv[0] = 0x07452301;
 	ctx->ihv[1] = 0xEFCDAB89;
 	ctx->ihv[2] = 0x98BADCFE;
 	ctx->ihv[3] = 0x10325476;
-- 
2.14.0.rc0.3.g6c2e499285