apply: do not read from beyond a symbolic link

diff --git a/t/t4122-apply-symlink-inside.sh b/t/t4122-apply-symlink-inside.sh
index 70b3a06e1dc7a92ac5a0806854e100af02c2346b..035c080581d5c10371e95d69d3219c619987c364 100755 (executable)
--- a/t/t4122-apply-symlink-inside.sh
+++ b/t/t4122-apply-symlink-inside.sh
@@ -52,4 +52,23 @@ test_expect_success 'check result' '
 
 '
 
+test_expect_success SYMLINKS 'do not read from beyond symbolic link' '
+       git reset --hard &&
+       mkdir -p arch/x86_64/dir &&
+       >arch/x86_64/dir/file &&
+       git add arch/x86_64/dir/file &&
+       echo line >arch/x86_64/dir/file &&
+       git diff >patch &&
+       git reset --hard &&
+
+       mkdir arch/i386/dir &&
+       >arch/i386/dir/file &&
+       ln -s ../i386/dir arch/x86_64/dir &&
+
+       test_must_fail git apply patch &&
+       test_must_fail git apply --cached patch &&
+       test_must_fail git apply --index patch
+
+'
+
 test_done