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author	Cristian Rodríguez <cristian@rodriguez.im>
	Sun, 11 Feb 2024 18:53:30 +0000 (15:53 -0300)
committer	Cristian Rodríguez <cristian@rodriguez.im>
	Mon, 12 Feb 2024 12:56:25 +0000 (09:56 -0300)
commit	0754479d6a3d843cd96bfe8185b601f02d444300
tree	1aeb60b4afe423936387314c48ae9b779f8db2b8	tree
parent	26e778a790fb016f639af5919d08f9affa677f23	commit \| diff

Save and restore errno on signal handlers

"Fetching and setting the value of errno is async-signal-safe
provided that the signal handler saves errno on entry and
restores its value before returning."

save and restore errno on cases where it is needed.

include/c.h		diff \| blob \| blame \| history
lib/pager.c		diff \| blob \| blame \| history
misc-utils/hardlink.c		diff \| blob \| blame \| history
text-utils/pg.c		diff \| blob \| blame \| history

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