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Masahiro Yamada c609ce8b3c kconfig: fix infinite loop when expanding a macro at the end of file ...

[ Upstream commit af8bbce920 ]

A macro placed at the end of a file with no newline causes an infinite
loop.

[Test Kconfig]
  $(info,hello)
  \ No newline at end of file

I realized that flex-provided input() returns 0 instead of EOF when it
reaches the end of a file.

Fixes: 104daea149 ("kconfig: reference environment variables directly and remove 'option env='")
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2024-03-26 18:20:58 -04:00

471 lines

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