[Bug c/69602] [6 Regression] over-ambitious logical-op warning on EAGAIN vs EWOULDBLOCK

[manu at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69602

--- Comment #3 from Manuel López-Ibáñez <manu at gcc dot gnu.org> ---
I wonder when/why it started warning, since -Wlogical-op is not new in GCC 6.

This is just a more complex case of PR61534.