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Man Pages
explain_tmpfile_or_die(3) FreeBSD Library Functions Manual explain_tmpfile_or_die(3)

explain_tmpfile_or_die - create a temporary file and report errors

#include <libexplain/tmpfile.h>
FILE *explain_tmpfile_or_die(void);
 
FILE *explain_tmpfile_on_error(void);

The explain_tmpfile_or_die function is used to call the tmpfile(3) system call. On failure an explanation will be printed to stderr, obtained from the explain_tmpfile(3) function, and then the process terminates by calling exit(EXIT_FAILURE).
The explain_tmpfile_on_error function is used to call the tmpfile(3) system call. On failure an explanation will be printed to stderr, obtained from the explain_tmpfile(3) function, but still returns to the caller.

The explain_tmpfile_or_die function only returns on success, see tmpfile(3) for more information. On failure, prints an explanation and exits, it does not return.
The explain_tmpfile_on_error function always returns the value return by the wrapped tmpfile(3) system call.

The explain_tmpfile_or_die function is intended to be used in a fashion similar to the following example:
FILE *result = explain_tmpfile_or_die();

tmpfile(3)
create a temporary file
explain_tmpfile(3)
explain tmpfile(3) errors
exit(2)
terminate the calling process

libexplain version 1.3
 
Copyright (C) 2009 Peter Miller

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