On Friday 06 October 2006 06:49, Kevin O'Gorman wrote: > On 10/5/06, Bo Ørsted Andresen <[EMAIL PROTECTED]> wrote: > > On Friday 06 October 2006 04:32, Kevin O'Gorman wrote: > > > gcc -Wall ctype.c -o ctype > > > I get > > > ctype.c:21: warning: implicit declaration of function 'isblank' > > > > $ gcc -std=gnu99 -Wall ctype.c -o ctype > > Why would this need a GNU-specific flag? Aren't these things some > level of POSIX? (I'm only guessing; FSF may well have added one > or two, and I want to know either way).
After sending the previous mail I figured I probably should have eloborated a bit. I didn't actually bother to look up the standards but instead I looked in <ctype.h> to find this info... $ gcc -Wall -o test-kev test-kev.c test-kev.c: In function ‘main’: test-kev.c:15: advarsel: implicit declaration of function ‘isblank’ $ gcc -std=c99 -Wall -o test-kev test-kev.c test-kev.c: In function ‘main’: test-kev.c:14: advarsel: implicit declaration of function ‘isascii’ $ gcc -std=gnu99 -Wall -o test-kev test-kev.c $ The point is unless someone made a mistake in <ctype.h> isblank is part of the C99 standard and isascii is a GNU extension... -- Bo Andresen
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