[previous] 0857 [next] [L] Number of macro definitions exceeds 1024 - program does not conform strictly to ISO:C90.
ISO C90 Conformance limits REFERENCE - ISO:C90-5.2.4.1 Translation Limits

The translation limits specified in the ISO:C Standard define a minimum set of conditions which a compiler must support in order to be described as conforming. In practice, compilers will often tolerate code which exceeds these minimal requirements. However, in order to ensure portability, it is advisable to avoid writing code that assumes a level of compiler capability which may not always be supported.

Message 0857 identifies a situation in which the number of macros defined within the translation unit exceeds 1024, the minimum requirement of the ISO:C90 Standard. Message 0380 identifies code which breaches the corresponding ISO:C99 limit, i.e. 4095 macros. These messages are not identifying incorrect code but they do identify code which is described in the respective standard as not strictly conforming.

MISRA C:2012 Rules applicable to message 0857:

Dir-1.1  (Required) Any implementation-defined behaviour on which the output of the program depends shall be documented and understood

See also:

QA·C Source Code Analyser 8.1
MISRA C:2012 Compliance Module 1.0
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