strange switch case problem

Code:

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template<class T>
T GetValue<T>::get(TiXmlNode* pParent)
{
        T attr;
        if ( !pParent ) return attr;

        TiXmlNode* pChild;
        TiXmlText* pText;
        int t = pParent->Type();
       
       
 

        switch ( t )
        {
        case TiXmlNode::TINYXML_DOCUMENT:
       
                break;

        case TiXmlNode::TINYXML_ELEMENT:
       
                attr =get_attribs(pParent->ToElement());
                break;

        case TiXmlNode::TINYXML_COMMENT:
       
                break;

        case TiXmlNode::TINYXML_UNKNOWN:
               
                break;

        case TiXmlNode::TINYXML_TEXT:
                pText = pParent->ToText();
               
                break;

        case TiXmlNode::TINYXML_DECLARATION:
               
                break;
        default:
                break;
        }
       
        for ( pChild = pParent->FirstChild(); pChild != 0; pChild = pChild->NextSibling())
        {
                get( pChild );
        }

        return attr;

}

---

A breakpoint at
case TiXmlNode::TINYXML_DOCUMENT:

break; // here

is never hit, why? It falls thru to the for loop straight off. The matching value is correct.
Thanks
Jack

Quote:

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Originally Posted by lucky6969b

is never hit, why? It falls thru to the for loop straight off.

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Well, if map and terrain don't match trust the terrain. :)

Quote:

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Originally Posted by lucky6969b

A breakpoint at
case TiXmlNode::TINYXML_DOCUMENT:
break; // here

is never hit, why? It falls thru to the for loop straight off. The matching value is correct.

---

The term "fall through" has a very specific meaning in the context of switch statements. You should look it up.

What likely happens, is that the compiler implements the switch statement as a jump table and directly jumps to the next statement based on the value used in the switch. The break is only a control statement and doesn't really do anything, so it is skipped.