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C Coding Standard: Clarify the form of structures and unions declared with local variable definition.

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Gregory Nutt 2017-08-07 16:28:10 -06:00
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Documentation/NuttXCCodingStandard.html
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@ -12,7 +12,7 @@
<h1><big><font color="#3c34ec">
<i>NuttX C Coding Standard</i>
</font></big></h1>
<p>Last Updated: June 18, 2017</p>
<p>Last Updated: August 7, 2017</p>
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@ -1357,7 +1357,15 @@ typedef int myinteger_t;
<b>No un-named structures</b>.
All structures must be named, even if they are part of a type definition.
That is, a structure name must follow the reserved word <code>struct</code> in all structure definitions.
The exception to this rule is for structures that are defined within another union or structure (discouraged). In those cases, the structure name should always be omitted.
There are two exceptions to this rule:
<ol>
<li>
First for structures that are defined within another union or structure (discouraged). In those cases, the structure name should always be omitted.
</li>
<li>
Second for structures as the type of a local variable. In this case, again, the structure name should always be ommitted.
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</ol>
</li>
<li>
<b>Structured defined with structures discouraged</b>.