16f6c0aecf
Inline adoc files when they are included exactly once. Also fix language tags because this inlining gives us better information on what language the code is written in.
63 lines
1.4 KiB
Plaintext
63 lines
1.4 KiB
Plaintext
== Why is this an issue?
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It is undefined behaviour if the declarations of an object or function in two different translation units do not have compatible types.
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The easiest way of ensuring object or function types are compatible is to make the declarations identical.
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=== Noncompliant code example
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[source,cpp]
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----
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// File a.cpp
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extern int32_t a;
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extern int32_t b [];
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extern char_t c;
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int32_t f1 ( );
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int32_t f2 ( int32_t );
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// File b.cpp
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extern int64_t a; // Noncompliant, not compatible
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extern int32_t b [ 5 ]; // Compliant
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int16_t c; // Noncompliant
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char_t f1 ( ); // Noncompliant
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char_t f2 ( char_t ); // Compliant, not the same function as int32_t f2 ( int32_t )
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----
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== Resources
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* MISRA C:2004, 8.4 - If objects or functions are declared more than once, their types shall be compatible.
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* MISRA {cpp}:2008, 3-2-1
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* https://wiki.sei.cmu.edu/confluence/x/ftUxBQ[CERT, DCL40-C.] - Do not create incompatible declarations of the same function or object
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ifdef::env-github,rspecator-view[]
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'''
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== Implementation Specification
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(visible only on this page)
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=== Message
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Make the multiple declarations of "xxx" compatible with each other.
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'''
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== Comments And Links
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(visible only on this page)
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=== is related to: S829
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=== is related to: S833
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=== is related to: S927
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=== is related to: S1047
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=== on 20 Oct 2014, 14:30:04 Ann Campbell wrote:
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cc [~freddy.mallet]
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endif::env-github,rspecator-view[]
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