Files
git/t/t4254-am-corrupt.sh
Jialong Wang 838c0ba500 apply: report input location in header parsing errors
Several header parsing errors in apply.c still report only line
numbers. When applying more than one input, that does not tell the
user which input the line belongs to.

Report the patch input location for these header parsing errors, and
update the related tests.

While touching parse_git_diff_header(), update the helper state to use
the current header line when reporting these errors.

Signed-off-by: Jialong Wang <jerrywang183@yahoo.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2026-03-17 11:08:24 -07:00

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#!/bin/sh
test_description='git am with corrupt input'
. ./test-lib.sh
if ! test_have_prereq ICONV
then
skip_all='skipping am encoding corruption tests; iconv not available'
test_done
fi
make_mbox_with_nul () {
space=' '
q_nul_in_subject=
q_nul_in_body=
while test $# -ne 0
do
case "$1" in
subject) q_nul_in_subject='=00' ;;
body) q_nul_in_body='=00' ;;
esac &&
shift
done &&
cat <<-EOF
From ec7364544f690c560304f5a5de9428ea3b978b26 Mon Sep 17 00:00:00 2001
From: A U Thor <author@example.com>
Date: Sun, 19 Apr 2020 13:42:07 +0700
Subject: [PATCH] =?ISO-8859-1?q?=C4=CB${q_nul_in_subject}=D1=CF=D6?=
MIME-Version: 1.0
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: quoted-printable
abc${q_nul_in_body}def
---
diff --git a/afile b/afile
new file mode 100644
index 0000000000..e69de29bb2
--$space
2.26.1
EOF
}
test_expect_success setup '
# Note the missing "+++" line:
cat >bad-patch.diff <<-\EOF &&
From: A U Thor <au.thor@example.com>
diff --git a/f b/f
index 7898192..6178079 100644
--- a/f
@@ -1 +1 @@
-a
+b
EOF
echo a >f &&
git add f &&
test_tick &&
git commit -m initial
'
# This used to fail before, too, but with a different diagnostic.
# fatal: unable to write file '(null)' mode 100644: Bad address
# Also, it had the unwanted side-effect of deleting f.
test_expect_success 'try to apply corrupted patch' '
test_when_finished "git am --abort" &&
test_must_fail git -c advice.amWorkDir=false -c advice.mergeConflict=false am bad-patch.diff 2>actual &&
test_path_is_file f &&
test_grep "error: git diff header lacks filename information at .*rebase-apply/patch:4" actual
'
test_expect_success "NUL in commit message's body" '
test_when_finished "git am --abort" &&
make_mbox_with_nul body >body.patch &&
test_must_fail git am body.patch 2>err &&
grep "a NUL byte in commit log message not allowed" err
'
test_expect_success "NUL in commit message's header" "
test_when_finished 'git am --abort' &&
make_mbox_with_nul subject >subject.patch &&
test_must_fail git mailinfo msg patch <subject.patch 2>err &&
grep \"a NUL byte in 'Subject' is not allowed\" err &&
test_must_fail git am subject.patch 2>err &&
grep \"a NUL byte in 'Subject' is not allowed\" err
"
test_done