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Internals: Width debug and null print check

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This commit is contained in:
Wilson Snyder
2012-07-27 21:12:06 -04:00
parent 6e219f5831
commit 1899096ff4
5 changed files with 16 additions and 9 deletions
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src/V3Ast.cpp
+4 -1
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@@ -758,13 +758,16 @@ void AstNode::iterateAndNext(AstNVisitor& v, AstNUser* vup) {
// Future versions of this function may require the node to have a back to be iterated;
// there's no lower level reason yet though the back must exist.
AstNode* nodep=this;
#ifdef VL_DEBUG // Otherwise too hot of a function for debug
if (VL_UNLIKELY(nodep && !nodep->m_backp)) nodep->v3fatalSrc("iterateAndNext node has no back");
#endif
while (nodep) {
AstNode* niterp = nodep;
AstNode* niterp = nodep; // This address may get stomped via m_iterpp if the node is edited
ASTNODE_PREFETCH(nodep->m_nextp);
niterp->m_iterpp = &niterp;
niterp->accept(v, vup);
// accept may do a replaceNode and change niterp on us...
//if (niterp != nodep) UINFO(1,"iterateAndNext edited "<<(void*)nodep<<" now into "<<(void*)niterp<<endl); // niterp maybe NULL, so need cast
if (!niterp) return;
niterp->m_iterpp = NULL;
if (VL_UNLIKELY(niterp!=nodep)) { // Edited it