diff --git a/include/verilated.cpp b/include/verilated.cpp
index 77ff0944f..12da6a49a 100644
--- a/include/verilated.cpp
+++ b/include/verilated.cpp
@@ -706,10 +706,10 @@ IData _vl_vsscanf(FILE* fp,  // If a fscanf
 		    _vl_vsss_skipspace(fp,floc,fromp,fstr);
 		    _vl_vsss_read(fp,floc,fromp,fstr, tmp, NULL);
 		    if (!tmp[0]) goto done;
-		    int pos = ((int)strlen(tmp))-1;
+		    int lpos = ((int)strlen(tmp))-1;
 		    int lsb = 0;
-		    for (int i=0; i<obits && pos>=0; --pos) {
-			_vl_vsss_setbit(owp,obits,lsb, 8, tmp[pos]); lsb+=8;
+		    for (int i=0; i<obits && lpos>=0; --lpos) {
+			_vl_vsss_setbit(owp,obits,lsb, 8, tmp[lpos]); lsb+=8;
 		    }
 		    break;
 		}
@@ -1186,9 +1186,9 @@ IData VL_VALUEPLUSARGS_INW(int rbits, const string& ld, WDataOutP rwp) {
     VL_ZERO_RESET_W(rbits, rwp);
     switch (tolower(fmt)) {
     case 'd':
-	vlsint64_t ld;
-	sscanf(dp,"%30" VL_PRI64 "d",&ld);
-	VL_SET_WQ(rwp,ld);
+	vlsint64_t lld;
+	sscanf(dp,"%30" VL_PRI64 "d",&lld);
+	VL_SET_WQ(rwp,lld);
 	break;
     case 'b':
 	_vl_vsss_based(rwp,rbits, 1, dp, 0, (int)strlen(dp));
diff --git a/include/verilated.h b/include/verilated.h
index 829f6c866..731a52837 100644
--- a/include/verilated.h
+++ b/include/verilated.h
@@ -1726,7 +1726,7 @@ static inline WDataOutP VL_SHIFTRS_WWW(int obits,int lbits,int rbits,WDataOutP o
 	if (VL_UNLIKELY(rwp[i])) { // Huge shift 1>>32 or more
 	    int lmsw = VL_WORDS_I(obits)-1;
 	    IData sign = VL_SIGNONES_I(lbits,lwp[lmsw]);
-	    for (int i=0; i <= lmsw; ++i) owp[i] = sign;
+	    for (int j=0; j <= lmsw; ++j) owp[j] = sign;
 	    owp[lmsw] &= VL_MASK_I(lbits);
 	    return owp;
 	}
diff --git a/src/V3Dead.cpp b/src/V3Dead.cpp
index e491d3ec5..cf3afba3d 100644
--- a/src/V3Dead.cpp
+++ b/src/V3Dead.cpp
@@ -338,8 +338,8 @@ private:
 	    if (vscp->user1() == 0) {
 		UINFO(4,"  Dead "<<vscp<<endl);
 		pair <AssignMap::iterator,AssignMap::iterator> eqrange = m_assignMap.equal_range(vscp);
-		for (AssignMap::iterator it = eqrange.first; it != eqrange.second; ++it) {
-		    AstNodeAssign* assp = it->second;
+		for (AssignMap::iterator itr = eqrange.first; itr != eqrange.second; ++itr) {
+		    AstNodeAssign* assp = itr->second;
 		    UINFO(4,"	 Dead assign "<<assp<<endl);
 		    assp->dtypep()->user1Inc(-1);
 		    assp->unlinkFrBack()->deleteTree(); VL_DANGLING(assp);
diff --git a/src/V3EmitCSyms.cpp b/src/V3EmitCSyms.cpp
index ba77d9d84..7bd4f3233 100644
--- a/src/V3EmitCSyms.cpp
+++ b/src/V3EmitCSyms.cpp
@@ -112,8 +112,8 @@ class EmitCSyms : EmitCBaseVisitor {
 	// We didn'e have all m_scopes loaded when we encountered variables, so expand them now
 	// It would be less code if each module inserted its own variables.
 	// Someday.  For now public isn't common.
-	for (vector<ScopeModPair>::iterator it = m_scopes.begin(); it != m_scopes.end(); ++it) {
-	    AstScope* scopep = it->first;  AstNodeModule* smodp = it->second;
+	for (vector<ScopeModPair>::iterator itsc = m_scopes.begin(); itsc != m_scopes.end(); ++itsc) {
+	    AstScope* scopep = itsc->first;  AstNodeModule* smodp = itsc->second;
 	    for (vector<ModVarPair>::iterator it = m_modVars.begin(); it != m_modVars.end(); ++it) {
 		AstNodeModule* modp = it->first;
 		AstVar* varp = it->second;
@@ -124,10 +124,10 @@ class EmitCSyms : EmitCBaseVisitor {
 		    string scpName;
 		    string varBase;
 		    if (whole.substr(0,10) == "__DOT__TOP") whole.replace(0,10,"");
-		    string::size_type pos = whole.rfind("__DOT__");
-		    if (pos != string::npos) {
-			scpName = whole.substr(0,pos);
-			varBase = whole.substr(pos+strlen("__DOT__"));
+		    string::size_type dpos = whole.rfind("__DOT__");
+		    if (dpos != string::npos) {
+			scpName = whole.substr(0,dpos);
+			varBase = whole.substr(dpos+strlen("__DOT__"));
 		    } else {
 			varBase = whole;
 		    }
diff --git a/src/V3File.cpp b/src/V3File.cpp
index 7d2391aba..a65402449 100644
--- a/src/V3File.cpp
+++ b/src/V3File.cpp
@@ -608,21 +608,22 @@ bool V3OutFormatter::tokenEnd(const char* cp) {
 
 int V3OutFormatter::endLevels (const char *strg) {
     int levels=m_indentLevel;
-    const char* cp=strg;
-    while (isspace(*cp)) cp++;
-    switch (*cp) {
-    case '\n':  // Newlines.. No need for whitespace before it
-	return (0);
-    case '#':	// Preproc directive
-	return (0);
-    }
     {
-	// label/public/private:  Deindent by 2 spaces
-	const char* mp=cp;
-	for (; isalnum(*mp); mp++) ;
-	if (mp[0]==':' && mp[1]!=':') return (levels-m_blockIndent/2);
+	const char* cp=strg;
+	while (isspace(*cp)) cp++;
+	switch (*cp) {
+	case '\n':  // Newlines.. No need for whitespace before it
+	    return (0);
+	case '#':	// Preproc directive
+	    return (0);
+	}
+	{
+	    // label/public/private:  Deindent by 2 spaces
+	    const char* mp=cp;
+	    for (; isalnum(*mp); mp++) ;
+	    if (mp[0]==':' && mp[1]!=':') return (levels-m_blockIndent/2);
+	}
     }
-
     // We want "} else {" to be one level to the left of normal
     for (const char* cp=strg; *cp; cp++) {
 	switch (*cp) {
diff --git a/src/V3GraphDfa.cpp b/src/V3GraphDfa.cpp
index cd46ac106..37880d33d 100644
--- a/src/V3GraphDfa.cpp
+++ b/src/V3GraphDfa.cpp
@@ -257,11 +257,11 @@ private:
 	    // Find epsilon closure of this nfa node, and destinations to work list
 	    for (V3GraphEdge* nfaEdgep = nfaStatep->outBeginp(); nfaEdgep; nfaEdgep=nfaEdgep->outNextp()) {
 		DfaEdge* cNfaEdgep = static_cast<DfaEdge*>(nfaEdgep);
-		DfaVertex* nfaStatep = static_cast<DfaVertex*>(nfaEdgep->top());
+		DfaVertex* ecNfaStatep = static_cast<DfaVertex*>(nfaEdgep->top());
 		//UINFO(9,"   Consider "<<nfaEdgep->top()<<" EP "<<cNfaEdgep->epsilon()<<endl);
 		if (cNfaEdgep->epsilon()
-		    && unseenNfaThisStep(nfaStatep)) {  // Not processed?
-		    workps.push_back(nfaStatep);
+		    && unseenNfaThisStep(ecNfaStatep)) {  // Not processed?
+		    workps.push_back(ecNfaStatep);
 		}
 	    }
 	}
diff --git a/src/V3GraphTest.cpp b/src/V3GraphTest.cpp
index 572773855..74dbde002 100644
--- a/src/V3GraphTest.cpp
+++ b/src/V3GraphTest.cpp
@@ -251,7 +251,7 @@ public:
 	// Outbound are cutable, as we may need to evaluate multiple times
 
 	{
-	    V3GraphTestVertex* n	= new V3GraphTestVertex(gp,"c=a|b|i");
+	    n = new V3GraphTestVertex(gp,"c=a|b|i");
 	    new V3GraphEdge(gp, n, c, 1, true);
 	    new V3GraphEdge(gp, a, n, 1, false);
 	    new V3GraphEdge(gp, b, n, 1, false);
diff --git a/src/V3PreProc.cpp b/src/V3PreProc.cpp
index a8342fffd..d1cd49ae7 100644
--- a/src/V3PreProc.cpp
+++ b/src/V3PreProc.cpp
@@ -568,24 +568,24 @@ string V3PreProcImp::defineSubst(V3DefineRef* refp) {
 	    //UINFO(4,"   Parse  Paren="<<paren<<"  Arg="<<numArgs<<"  token='"<<token<<"'  Parse="<<cp<<endl);
 	    if (!quote && paren==1) {
 		if (*cp==')' || *cp==',') {
-		    string value;
-		    if (haveDefault) { value=token; } else { argName=token; }
+		    string valueDef;
+		    if (haveDefault) { valueDef=token; } else { argName=token; }
 		    argName = trimWhitespace(argName,true);
-		    UINFO(4,"    Got Arg="<<numArgs<<"  argName='"<<argName<<"'  default='"<<value<<"'"<<endl);
+		    UINFO(4,"    Got Arg="<<numArgs<<"  argName='"<<argName<<"'  default='"<<valueDef<<"'"<<endl);
 		    // Parse it
 		    if (argName!="") {
 			if (refp->args().size() > numArgs) {
 			    // A call `def( a ) must be equivelent to `def(a ), so trimWhitespace
 			    // At one point we didn't trim trailing whitespace, but this confuses `"
 			    string arg = trimWhitespace(refp->args()[numArgs], true);
-			    if (arg != "") value = arg;
+			    if (arg != "") valueDef = arg;
 			} else if (!haveDefault) {
 			    error("Define missing argument '"+argName+"' for: "+refp->name()+"\n");
 			    return " `"+refp->name()+" ";
 			}
 			numArgs++;
 		    }
-		    argValueByName[argName] = value;
+		    argValueByName[argName] = valueDef;
 		    // Prepare for next
 		    argName = "";
 		    token = "";
diff --git a/src/VlcMain.cpp b/src/VlcMain.cpp
index d02f1821a..51c8b0147 100644
--- a/src/VlcMain.cpp
+++ b/src/VlcMain.cpp
@@ -147,10 +147,12 @@ int main(int argc, char** argv, char** env) {
 	top.opt.addReadFile("vlt_coverage.pl");
     }
 
-    const VlStringSet& readFiles = top.opt.readFiles();
-    for (VlStringSet::iterator it = readFiles.begin(); it != readFiles.end(); ++it) {
-	string filename = *it;
-	top.readCoverage(filename);
+    {
+	const VlStringSet& readFiles = top.opt.readFiles();
+	for (VlStringSet::iterator it = readFiles.begin(); it != readFiles.end(); ++it) {
+	    string filename = *it;
+	    top.readCoverage(filename);
+	}
     }
 
     if (debug() >= 9) {
diff --git a/test_regress/t/t_vpi_get.cpp b/test_regress/t/t_vpi_get.cpp
index 0d1a4407a..e862d321d 100644
--- a/test_regress/t/t_vpi_get.cpp
+++ b/test_regress/t/t_vpi_get.cpp
@@ -88,7 +88,7 @@ unsigned int main_time = false;
 
 static int _mon_check_props(TestVpiHandle& handle, int size, int direction, int scalar, int type) {
     s_vpi_value value = {
-      vpiIntVal
+	vpiIntVal, .value = {.integer = 0}
     };
     // check size of object
     int vpisize = vpi_get(vpiSize, handle);
diff --git a/test_regress/t/t_vpi_memory.cpp b/test_regress/t/t_vpi_memory.cpp
index ab58de157..07b91844a 100644
--- a/test_regress/t/t_vpi_memory.cpp
+++ b/test_regress/t/t_vpi_memory.cpp
@@ -89,7 +89,7 @@ unsigned int main_time = false;
 int _mon_check_range(TestVpiHandle& handle, int size, int left, int right) {
     TestVpiHandle iter_h, left_h, right_h;
     s_vpi_value value = {
-      vpiIntVal
+	vpiIntVal, .value = {.integer = 0}
     };
     // check size of object
     int vpisize = vpi_get(vpiSize, handle);
@@ -120,7 +120,7 @@ int _mon_check_memory() {
     TestVpiHandle mem_h, lcl_h;
     vpiHandle iter_h; // icarus does not like auto free of iterator handles
     s_vpi_value value = {
-      vpiIntVal
+	vpiIntVal, .value = {.integer = 0}
     };
     vpi_printf((PLI_BYTE8*)"Check memory vpi ...\n");
     mem_h = vpi_handle_by_name((PLI_BYTE8*)TestSimulator::rooted("mem0"), NULL);
diff --git a/test_regress/t/t_vpi_var.cpp b/test_regress/t/t_vpi_var.cpp
index f55055f38..c2fdfe065 100644
--- a/test_regress/t/t_vpi_var.cpp
+++ b/test_regress/t/t_vpi_var.cpp
@@ -395,7 +395,7 @@ int _mon_check_string() {
       CHECK_RESULT_NZ(vh1);
 
       s_vpi_value v;
-      s_vpi_time t = { vpiSimTime, 0, 0};
+      s_vpi_time t = { vpiSimTime, 0, 0, 0.0};
       s_vpi_error_info e;
 
       v.format = vpiStringVal;
diff --git a/test_sc/sc_main.cpp b/test_sc/sc_main.cpp
index a8ff1646e..41b9475b7 100644
--- a/test_sc/sc_main.cpp
+++ b/test_sc/sc_main.cpp
@@ -17,8 +17,6 @@
 
 #include "Vtop.h"		// Top level header, generated from verilog
 
-Vtop *top;
-
 int sc_main(int argc, char* argv[]) {
     Verilated::commandArgs(argc, argv);
     Verilated::randReset(2);