NAME

explain_vasprintf_or_die - print to allocated string and report errors

SYNOPSIS

#include <libexplain/vasprintf.h>

int explain_vasprintf_or_die(char **data, const char *format, va_list ap);
int explain_vasprintf_on_error(char **data, const char *format, va_list ap);

DESCRIPTION

The explain_vasprintf_or_die function is used to call the vasprintf(3) system call. On failure an explanation will be printed to stderr, obtained from the explain_vasprintf(3) function, and then the process terminates by calling exit(EXIT_FAILURE).

The explain_vasprintf_on_error function is used to call the vasprintf(3) system call. On failure an explanation will be printed to stderr, obtained from the explain_vasprintf(3) function, but still returns to the caller.

data: The data, exactly as to be passed to the vasprintf(3) system call.
format: The format, exactly as to be passed to the vasprintf(3) system call.
ap: The ap, exactly as to be passed to the vasprintf(3) system call.

RETURN VALUE

The explain_vasprintf_or_die function only returns on success, see vasprintf(3) for more information. On failure, prints an explanation and exits, it does not return.

The explain_vasprintf_on_error function always returns the value return by the wrapped vasprintf(3) system call.

EXAMPLE

The explain_vasprintf_or_die function is intended to be used in a fashion similar to the following example:

int result = explain_vasprintf_or_die(data, format, ap);

NAME

SYNOPSIS

DESCRIPTION

RETURN VALUE

EXAMPLE

SEE ALSO

COPYRIGHT