/usr/share/lintian/overrides/libstdc++6-sh4-cross is in libstdc++6-sh4-cross 8-20180414-1ubuntu2cross1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 | libstdc++6-sh4-cross binary: arch-independent-package-contains-binary-or-object
libstdc++6-sh4-cross binary: non-standard-dir-in-usr
libstdc++6-sh4-cross binary: shlibs-declares-dependency-on-other-package
libstdc++6-sh4-cross binary: postinst-has-useless-call-to-ldconfig
libstdc++6-sh4-cross binary: postrm-has-useless-call-to-ldconfig
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