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ssize_t is undefined


ssize_t is undefined

By : Sam K
Date : October 19 2020, 06:10 AM
will help you The "signed-size_t" is not part of standard C, instead it's specific to POSIX (Unix, BSD, Linux, etc) and it's in sys/types.h:
https://pubs.opengroup.org/onlinepubs/7908799/xsh/systypes.h.html
code :


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C# analog type for ssize_t

C# analog type for ssize_t


By : Scripty
Date : March 29 2020, 07:55 AM
wish helps you You can use the IntPtr type:
C size_t and ssize_t negative value

C size_t and ssize_t negative value


By : mushroom_picker
Date : March 29 2020, 07:55 AM
With these it helps In the first case you're assigning to an unsigned type - a. In the second case you're using the wrong format specifier. The second specifier should be %zd instead of %zu.
Using ssize_t vs int

Using ssize_t vs int


By : user6844675
Date : March 29 2020, 07:55 AM
may help you . There's no guarantee in the POSIX standard that sizeof(int) >= sizeof(ssize_t), nor the other way around. Typically ssize_t is larger than int, but the safe and portable option in C99 is to use intmax_t instead for the argument and the return value.
The only guarantees you have wrt. the relationship between int and ssize_t are:
Adding Strings and ssize_t?

Adding Strings and ssize_t?


By : Prateek Khamesra
Date : March 29 2020, 07:55 AM
it helps some times I have a question on adding strings and data types. What does it mean to use them in such arithmetic? Does body + size mean that it is creating a new block of memory that includes both of them?
code :
char *body;
ssize_t size;
body + size
memcpy(body + size, buffer, octets);
should use size_t or ssize_t

should use size_t or ssize_t


By : Maria
Date : March 29 2020, 07:55 AM
around this issue ssize_t is used for functions whose return value could either be a valid size, or a negative value to indicate an error. It is guaranteed to be able to store values at least in the range [-1, SSIZE_MAX] (SSIZE_MAX is system-dependent).
So you should use size_t whenever you mean to return a size in bytes, and ssize_t whenever you would return either a size in bytes or a (negative) error value.
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