Fix misc string handling issues.

src/V3Const.cpp

@@ -2219,6 +2219,7 @@ private:
     TREEOPV("AstExtend {$lhsp.castExtend}",		"replaceExtend(nodep, nodep->lhsp()->castExtend()->lhsp())");
     TREEOPV("AstExtendS{$lhsp.castExtendS}",		"replaceExtend(nodep, nodep->lhsp()->castExtendS()->lhsp())");
     TREEOPV("AstReplicate{$lhsp, $rhsp.isOne, $lhsp->width()==nodep->width()}",	"replaceWLhs(nodep)");  // {1{lhs}}->lhs
+    TREEOPV("AstReplicateN{$lhsp, $rhsp.isOne, $lhsp->width()==nodep->width()}", "replaceWLhs(nodep)");  // {1{lhs}}->lhs
     // Next rule because AUTOINST puts the width of bits in
     // to pins, even when the widths are exactly the same across the hierarchy.
     TREEOPV("AstSel{operandSelExtend(nodep)}",	"DONE");

src/V3EmitC.cpp

@@ -1392,9 +1392,6 @@ void EmitCImp::emitVarResets(AstNodeModule* modp) {
 	    if (varp->isIO() && modp->isTop() && optSystemC()) {
 		// System C top I/O doesn't need loading, as the lower level subinst code does it.
 	    }
-	    else if (varp->basicp() && varp->basicp()->keyword() == AstBasicDTypeKwd::STRING) {
-		// Constructor deals with it
-	    }
 	    else if (varp->isParam()) {
 		if (!varp->valuep()) nodep->v3fatalSrc("No init for a param?");
 		// If a simple CONST value we initialize it using an enum
@@ -1413,6 +1410,9 @@ void EmitCImp::emitVarResets(AstNodeModule* modp) {
 		    varp->v3fatalSrc("InitArray under non-arrayed var");
 		}
 	    }
+	    else if (varp->basicp() && varp->basicp()->keyword() == AstBasicDTypeKwd::STRING) {
+		// Constructor deals with it
+	    }
 	    else {
 		int vects = 0;
 		// This isn't very robust and may need cleanup for other data types

src/V3Width.cpp

@@ -708,7 +708,9 @@ private:
 	// However a later operation may have changed the node->signed w/o changing
 	// the number's sign.  So we don't: nodep->dtypeChgSigned(nodep->num().isSigned());
 	if (vup && vup->c()->prelim()) {
-	    if (nodep->num().sized()) {
+	    if (nodep->num().isString()) {
+		nodep->dtypeSetString();
+	    } else if (nodep->num().sized()) {
 		nodep->dtypeChgWidth(nodep->num().width(), nodep->num().width());
 	    } else {
 		nodep->dtypeChgWidth(nodep->num().width(), nodep->num().widthMin());

src/V3WidthCommit.h

@@ -72,8 +72,9 @@ class WidthCommitVisitor : public AstNVisitor {
 public:
     // METHODS
     static AstConst* newIfConstCommitSize (AstConst* nodep) {
-	if ((nodep->dtypep()->width() != nodep->num().width())
+	if (((nodep->dtypep()->width() != nodep->num().width())
-	    || !nodep->num().sized()) {  // Need to force the number rrom unsized to sized
+	     || !nodep->num().sized())
+	    && !nodep->num().isString()) {  // Need to force the number rrom unsized to sized
 	    V3Number num (nodep->fileline(), nodep->dtypep()->width());
 	    num.opAssign(nodep->num());
 	    num.isSigned(nodep->isSigned());