SIMPLE SOLUTIONS

EXPLAIN_VSPRINTF_OR_DIE - reference manual online

Formatted output conversion and report errors.

Chapter
explain_vsprintf_or_die(3)           Library Functions Manual          explain_vsprintf_or_die(3)

NAME explain_vsprintf_or_die - formatted output conversion and report errors
SYNOPSIS #include <libexplain/vsprintf.h> int explain_vsprintf_or_die(char *data, const char *format, va_list ap); int explain_vsprintf_on_error(char *data, const char *format, va_list ap);
DESCRIPTION The explain_vsprintf_or_die function is used to call the vsprintf(3) system call. On fail‐ ure an explanation will be printed to stderr, obtained from the explain_vsprintf(3) func‐ tion, and then the process terminates by calling exit(EXIT_FAILURE). The explain_vsprintf_on_error function is used to call the vsprintf(3) system call. On failure an explanation will be printed to stderr, obtained from the explain_vsprintf(3) function, but still returns to the caller. data The data, exactly as to be passed to the vsprintf(3) system call. format The format, exactly as to be passed to the vsprintf(3) system call. ap The ap, exactly as to be passed to the vsprintf(3) system call.
RETURN VALUE The explain_vsprintf_or_die function only returns on success, see vsprintf(3) for more information. On failure, prints an explanation and exits, it does not return. The explain_vsprintf_on_error function always returns the value return by the wrapped vsprintf(3) system call.
EXAMPLE The explain_vsprintf_or_die function is intended to be used in a fashion similar to the following example: int result = explain_vsprintf_or_die(data, format, ap);
SEE ALSO vsprintf(3) formatted output conversion explain_vsprintf(3) explain vsprintf(3) errors exit(2) terminate the calling process
explain_vsprintf_or_die(3)
This manual Reference Other manuals
explain_vsprintf_or_die(3) referred by explain(3) | explain_vsprintf(3)
refer to _exit(2) | explain_vsprintf(3) | printf(3)