MISRA.STDLIB.STDIO.WCHAR.2012

MISRA C 2012 Rule 21.6: The Standard Library input/output functions shall not be used

Wide-character equivalent identifiers from stdio.h shall not be used

This checker applies to the C99 portion of the rule.

C90 [Unspecified 2–5, 16–18; Undefined 77–89; Implementation 53–68]

C99 [Unspecified 3–6, 34–37; Undefined 138–166, 186; Implementation J.3.12(14–32)]

Category: Required

Analysis: Decidable, Single Translation Unit

Applies to: C90, C99

Amplification

This rule applies to the functions that are specified as being provided by <stdio.h> and, in C99, their wide-character equivalents specified in Sections 7.24.2 and 7.24.3 of the C99 Standard as being provided by <wchar.h>.

None of these identifiers shall be used and no macro with one of these names shall be expanded.

Rationale

Streams and file I/O have unspecified, undefined and implementation-defined behaviours associated with them.

See also

Rule 22.1, Rule 22.3, Rule 22.4, Rule 22.5, Rule 22. 6