The Open Group Base Specifications Issue 7
IEEE Std 1003.1-2008, 2016 Edition
Copyright © 2001-2016 The IEEE and The Open Group
NAME
ferror - test error indicator on a stream
SYNOPSIS
#include <stdio.h>
int ferror(FILE *stream);
DESCRIPTION
[CX] ![[Option Start]](../images/opt-start.gif)
The functionality described on this reference page is aligned with the ISO C standard. Any conflict between the
requirements described here and the ISO C standard is unintentional. This volume of POSIX.1-2008 defers to the ISO C
standard.
![[Option End]](../images/opt-end.gif)
The ferror() function shall test the error indicator for the stream pointed to by stream.
[CX] The
ferror() function shall not change the setting of errno if stream is valid.
RETURN VALUE
The ferror() function shall return non-zero if and only if the error indicator is set for stream.
ERRORS
No errors are defined.
The following sections are informative.
EXAMPLES
None.
APPLICATION USAGE
None.
RATIONALE
None.
FUTURE DIRECTIONS
None.
SEE ALSO
clearerr, feof, fopen
XBD <stdio.h>
CHANGE HISTORY
First released in Issue 1. Derived from Issue 1 of the SVID.
Issue 7
POSIX.1-2008, Technical Corrigendum 1, XSH/TC1-2008/0125 [401] is applied.
End of informative text.
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