[PATCH v2 1/2] Regression test for https://github.com/gitgitgadget/git/pull/1577

["Kevin Backhouse via GitGitGadget" <gitgitgadget@gmail.com>]

From: Kevin Backhouse <kevinbackhouse@github.com>

Signed-off-by: Kevin Backhouse <kevinbackhouse@github.com>
---
 t/t9904-merge-leak.sh | 40 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 40 insertions(+)
 create mode 100755 t/t9904-merge-leak.sh

diff --git a/t/t9904-merge-leak.sh b/t/t9904-merge-leak.sh
new file mode 100755
index 00000000000..09a4474fd73
--- /dev/null
+++ b/t/t9904-merge-leak.sh
@@ -0,0 +1,40 @@
+#!/bin/sh
+#
+
+test_description='regression test for memory leak in git merge'
+
+GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
+export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
+
+. ./lib-bash.sh
+
+# test-lib.sh disables LeakSanitizer by default, but we want it enabled
+# for this test
+ASAN_OPTIONS=
+export ASAN_OPTIONS
+
+. "$GIT_BUILD_DIR/contrib/completion/git-prompt.sh"
+
+test_expect_success 'Merge fails due to local changes' '
+	git init &&
+	echo x > x.txt &&
+	git add . &&
+	git commit -m "WIP" &&
+	git checkout -b dev &&
+	echo y > x.txt &&
+	git add . &&
+	git commit -m "WIP" &&
+	git checkout main &&
+	echo z > x.txt &&
+	git add . &&
+	git commit -m "WIP" &&
+	echo a > x.txt &&
+	git add . &&
+	echo "error: ''Your local changes to the following files would be overwritten by merge:''" >expected &&
+	echo "  x.txt" >>expected &&
+	echo "Merge with strategy ort failed." >>expected &&
+	test_must_fail git merge -s ort dev 2>actual &&
+	test_cmp expected actual
+'
+
+test_done
-- 
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