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V2517. MISRA. Literal suffixes should n…
Analyzer Diagnostics
General Analysis (C++)
General Analysis (C#)
General Analysis (Java)
Diagnosis of micro-optimizations (C++)
Diagnosis of 64-bit errors (Viva64, C++)
MISRA errors
AUTOSAR errors
Additional information
Contents

V2517. MISRA. Literal suffixes should not contain lowercase characters.

Nov. 19, 2018

This diagnostic rule is based on the software development guidelines developed by MISRA (Motor Industry Software Reliability Association).

This diagnostic varies for C and C++.

C: the suffix 'L' should be used instead of 'l'.

C++: all literal suffixes should be uppercase.

Using lowercase suffixes obscures the code. For example, you may confuse an 'l' suffix with the numeral one (1), which could cause various mistakes.

Here are examples of literals triggering this warning:

12l; 34.0f; 23u;

The warning is not issued when the literals are written in the following form:

12L; 34.0F; 23U;

This diagnostic is classified as:

  • MISRA-C-7.3
  • MISRA-CPP-2.13.4
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