[Bug 245200] emulators/emu64 : Fails to build on FreeBSD 12.1-RELEASE-p1 powerpc 32 bit: error: narrowing conversion of '-1' from 'int' to 'char' [-Wnarrowing]

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=245200

Justin Hibbits <jhibbits at FreeBSD.org> changed:

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                 CC|                            |jhibbits at FreeBSD.org

--- Comment #7 from Justin Hibbits <jhibbits at FreeBSD.org> ---
Careful, that narrowing on powerpc and arm would yield a value of 255.  If it's
used as a '< 0' check later, said check will fail.

I've run into this a lot when people set the return value of getopt() to a
char, and compare to -1, leading to an infinite loop.

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