Thomas Hebb ba7c39e92b kconfig: don't crash on NULL expressions in expr_eq() ...

[ Upstream commit 272a721030 ]

NULL expressions are taken to always be true, as implemented by the
expr_is_yes() macro and by several other functions in expr.c. As such,
they ought to be valid inputs to expr_eq(), which compares two
expressions.

Signed-off-by: Thomas Hebb <tommyhebb@gmail.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2020-01-12 12:21:35 +01:00

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