MISRA C:2012 Rule 7.2
A “u” or “U” suffix shall be applied to all integer constants that are represented in an unsigned type
Description
Rule Definition
A “u” or “U” suffix shall be applied to all integer constants that are represented in an unsigned type1 .
Rationale
The signedness of a constant is determined from:
Value of the constant.
Base of the constant: octal, decimal or hexadecimal.
Size of the various types.
Any suffixes used.
Unless you use a suffix u
or U
,
another developer looking at your code cannot determine easily whether
a constant is signed or unsigned.
Troubleshooting
If you expect a rule violation but do not see it, refer to Diagnose Why Coding Standard Violations Do Not Appear as Expected.
Examples
Check Information
Group: Literals and Constants |
Category: Required |
AGC Category: Readability |
Version History
Introduced in R2014b1 All MISRA coding rules and directives are © Copyright The MISRA Consortium Limited 2021.
The MISRA coding standards referenced in the Polyspace Bug Finder™ documentation are from the following MISRA standards:
MISRA C:2004
MISRA C:2012
MISRA C:2023
MISRA C++:2008
MISRA C++:2023
MISRA and MISRA C are registered trademarks of The MISRA Consortium Limited 2021.