[PATCH 1/3] test: add known broken tests for empty message/rfc822 part

Subject: [PATCH 1/3] test: add known broken tests for empty message/rfc822 part

Date: Mon, 10 Aug 2026 20:32:34 -0300

To: David Bremner, notmuch@notmuchmail.org

Cc:

From: David Bremner

Reproducers for a bug report of Štěpán Němec [1]

[1] id:20260623074714Z.449345370-stepnem@smrk.net
---
 test/T520-show.sh              |   7 +++
 test/corpora/broken/empty-part | 111 +++++++++++++++++++++++++++++++++
 2 files changed, 118 insertions(+)
 create mode 100644 test/corpora/broken/empty-part

diff --git a/test/T520-show.sh b/test/T520-show.sh
index 1f7f6aa8..9eb49284 100755
--- a/test/T520-show.sh
+++ b/test/T520-show.sh
@@ -106,4 +106,11 @@ for dup in {1..5}; do
     test_json_nodes <<<"$output" "dup:['duplicate']=${dup}"
 done
 
+add_email_corpus broken
+for format in text json sexp; do
+    test_begin_subtest "don't crash on empty part ($format)"
+    test_subtest_known_broken
+    test_expect_code 0 "notmuch show --format=$format id:1782193672-98446-mlmmj-36f22ff2@FreeBSD.org"
+done
+
 test_done
diff --git a/test/corpora/broken/empty-part b/test/corpora/broken/empty-part
new file mode 100644
index 00000000..3019becd
--- /dev/null
+++ b/test/corpora/broken/empty-part
@@ -0,0 +1,111 @@
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+Content-Type: multipart/mixed;
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+From: freebsd-hackers+owner@FreeBSD.org
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+Message-ID: <1782193672-98446-mlmmj-36f22ff2@FreeBSD.org>
+Date: Tue, 23 Jun 2026 05:47:52 +0000
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+Hi, this is the Mlmmj program managing the <freebsd-hackers@FreeBSD.org>
+mailing list.
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-- 
2.53.0

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