vasprintf.c File Reference

#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>

Include dependency graph for vasprintf.c:

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Macros
#define	_GNU_SOURCE

Functions
int	vasprintf (char **string, const char *fmt, va_list arg_list)

Macro Definition Documentation

_GNU_SOURCE

#define _GNU_SOURCE

Definition at line 3 of file vasprintf.c.

Function Documentation

vasprintf()

int vasprintf	(	char **	string,
		const char *	fmt,
		va_list	arg_list
	)

Definition at line 8 of file vasprintf.c.

{
    va_list arg_list_copy;
    va_copy(arg_list_copy, arg_list);
    int l = vsnprintf(0, 0, fmt, arg_list_copy);
    va_end(arg_list_copy);

    if(l < 0 || !(*string = malloc((size_t)l + 1U)))
    {
        return -1;
    }

    return vsnprintf(*string, (size_t)l + 1U, fmt, arg_list);
}

References malloc(), va_copy, and va_end.

Referenced by asprintf().