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02-18-2008, 07:50 AM
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 Re: more improvements for mg On Mon, 16 May 2005, Han Boetes wrote: > Sven Dehmlow wrote: > > size_t is usually typedef'ed as something unsigned, but snprintf may > > return signed integer values. That's why it's not very clever to use size_t > > here. > > > > /usr/src/sys/arch/i386/include/ansi.h: > > #define _BSD_SIZE_T_ unsigned int > > > > /usr/src/include/stddef.h: > > typedef _BSD_SIZE_T_ size_t; > > > > printf(3): > > int (!) > > snprintf(char *str, size_t size, const char *format, ...); > > > > or in pseudo-C: > > unsigned int != int > > > > Hope this helps on the way to enlightment ... ;-) > > Yes I know. But sizeof() returns size_t. Suppose int has a range > from -128 to 127 and size_t from 0 to 255. > > What will you do if sizeof() returns, say, 130... If nothing helps compare it with a constant first, but never, never, never fill an unsigned type with a signed value. Sven      |
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