[MPlayer-users] asprintf undefined

[Carsten Koch]

Steven M. Schultz wrote:
...
> 	What is 'asprintf' and where would one expect to find it?

% man asprintf


ASPRINTF(3)         Linux Programmer's Manual         ASPRINTF(3)



NAME
        asprintf, vasprintf - print to allocated string

SYNOPSIS
        #define _GNU_SOURCE
        #include <stdio.h>

        int asprintf(char **strp, const char *fmt, ...);

        int vasprintf(char **strp, const char *fmt, va_list ap);

DESCRIPTION
        The functions asprintf and vasprintf are analogues of sprintf and vsprintf, except that they allocate a string large enough to hold the output including the terminating NUL, and return
        a pointer to it via the first parameter.  This pointer should be passed to free(3) to release the allocated storage when it is no longer needed.

RETURN VALUE
        When successful, these functions return the number of bytes printed, just like sprintf(3).  If memory allocation wasn't possible, or some  other  error  occurs,  these  functions  will
        return -1, and the contents of strp is undefined.

NOTES
        These functions are GNU extensions, not in C or POSIX.  They are also available under *BSD.  The FreeBSD implementation sets strp to NULL on error.

SEE ALSO
        free(3), malloc(3), printf(3)




GNU                         2001-12-18                ASPRINTF(3)


%  nm /usr/lib/libc.a|fgrep asprintf
          U __asprintf
          U __asprintf
asprintf.o:
          U _IO_vasprintf
00000000 T __asprintf
00000000 W asprintf
          U __asprintf
vasprintf.o:
00000000 T _IO_vasprintf
00000000 W vasprintf
          U __asprintf
          U __asprintf
          U __asprintf
          U __asprintf
          U __asprintf