== Why is this an issue?

The evaluation order of both the ``++#++`` and ``++##++`` preprocessor operators is unspecified. Compilers have been known to implement these operators inconsistently, therefore, to avoid these problems, do not use them.


=== Noncompliant code example

[source,cpp]
----
#define A(Y)   #Y    /* Noncompliant */
#define A(X,Y) X##Y  /* Noncompliant */
----


== Resources

* MISRA C:2004, 19.13 - The # and ## preprocessor operators should not be used.
* MISRA {cpp}:2008, 16-3-2 - The # and ## operators should not be used.
* MISRA C:2012, 20.10 - The # and ## preprocessor operators should not be used


ifdef::env-github,rspecator-view[]
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== Comments And Links
(visible only on this page)

=== on 6 Apr 2015, 14:13:12 Evgeny Mandrikov wrote:
\[~ann.campbell.2] implementation seems more complete (SQALE, description) than this spec.

=== on 13 Apr 2015, 19:32:33 Evgeny Mandrikov wrote:
\[~ann.campbell.2] I'm wondering why blocker, but not active by default? Note that in implementation currently major and active.

endif::env-github,rspecator-view[]