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isaac
2009 Jul 07
1
Non-standard conformant usage of ctype functions
Hi,
Per the definitions of the ctype functions in POSIX-1.2008 "the c
argument is an int, the value of which the application shall ensure is a
character representable as an unsigned char or equal to the value of the
macro EOF. If the argument has any other value, the behavior is
undefined."
For obvious reasons this results in problems if you use signed char
variables as parameters in