diff --git a/Changes b/Changes
index 2c0f22857..c290e1477 100644
--- a/Changes
+++ b/Changes
@@ -11,6 +11,8 @@ The contributors that suggested a given feature are shown in []. Thanks!
 
 ****  The internal test_verilated test directory is moved to be part of test_regress.
 
+****  Fix Ubuntu 17.10 issues, bug1223 partial. [John Coiner]
+
 
 * Verilator 3.912 2017-09-23
 
diff --git a/src/V3EmitC.cpp b/src/V3EmitC.cpp
index 35d84bf96..389e148c4 100644
--- a/src/V3EmitC.cpp
+++ b/src/V3EmitC.cpp
@@ -1904,7 +1904,8 @@ void EmitCImp::emitInt(AstNodeModule* modp) {
 	bool did = false;
 	for (AstNode* nodep=modp->stmtsp(); nodep; nodep = nodep->nextp()) {
 	    if (AstCell* cellp=nodep->castCell()) {
-		if (!did++) {
+		if (!did) {
+		    did = true;
 		    putsDecoration("// CELLS\n");
 		    if (modp->isTop()) puts("// Public to allow access to /*verilator_public*/ items;\n");
 		    if (modp->isTop()) puts("// otherwise the application code can consider these internals.\n");
diff --git a/src/V3EmitCSyms.cpp b/src/V3EmitCSyms.cpp
index a1ba82ea0..2261ce6ed 100644
--- a/src/V3EmitCSyms.cpp
+++ b/src/V3EmitCSyms.cpp
@@ -329,7 +329,10 @@ void EmitCSyms::emitSymHdr() {
     {  // Scope names
 	bool did = false;
 	for (ScopeNames::iterator it = m_scopeNames.begin(); it != m_scopeNames.end(); ++it) {
-	    if (!did++) puts("\n// SCOPE NAMES\n");
+	    if (!did) {
+	        did = true;
+	        puts("\n// SCOPE NAMES\n");
+	    }
 	    puts("VerilatedScope __Vscope_"+it->second.m_symName+";\n");
 	}
     }
@@ -432,7 +435,10 @@ void EmitCSyms::emitSymImp() {
     {  // Setup scope names
 	bool did = false;
 	for (ScopeNames::iterator it = m_scopeNames.begin(); it != m_scopeNames.end(); ++it) {
-	    if (!did++) puts("// Setup scope names\n");
+	    if (!did) {
+		did = true;
+		puts("// Setup scope names\n");
+	    }
 	    puts("__Vscope_"+it->second.m_symName+".configure(this,name(),");
 	    putsQuoted(it->second.m_prettyName);
 	    puts(");\n");
diff --git a/test_regress/driver.pl b/test_regress/driver.pl
index e8d1a52b2..099b6d939 100755
--- a/test_regress/driver.pl
+++ b/test_regress/driver.pl
@@ -1002,13 +1002,14 @@ sub _run {
 	    if ($param{expect}) {
 		# Compare
 		my $quoted = quotemeta ($param{expect});
-		my $bad = ($wholefile ne $param{expect}
-			   && $wholefile !~ /$param{expect}/ms
-			   && $wholefile !~ /$quoted/ms);
-		if ($bad) {
+                my $ok = ($wholefile eq $param{expect}
+			  || _try_regex($wholefile, $param{expect}) == 1
+			  || $wholefile =~ /$quoted/ms);
+		if (!$ok) {
 		    #print "**BAD  $self->{name} $param{logfile} MT $moretry  $try\n";
 		    next if $moretry;
 		    $self->error("Mismatch in output from $param{cmd}[0]\n");
+		    $self->error("Might be error in regexp format\n") if $ok<1;
 		    print "GOT:\n";
 		    print $wholefile;
 		    print "ENDGOT\n";
@@ -1025,6 +1026,24 @@ sub _run {
 #######################################################################
 # Little utilities
 
+sub _try_regex {
+    # Try to eval a regexp
+    # Returns:
+    #  1 if $text ~= /$regex/ms
+    #  0 if no match
+    # -1 if $regex is invalid, doesn't compile
+    my ($text, $regex) = @_;
+    my $result;
+    {
+        local $@;
+        eval {
+            $result = ($text =~ /$regex/ms);
+        };
+        $result = -1 if $@;
+    }
+    return $result;
+}
+
 sub _make_main {
     my $self = shift;
 
diff --git a/test_regress/t/t_enum_public.cpp b/test_regress/t/t_enum_public.cpp
index 8beeb64b5..62e024f35 100644
--- a/test_regress/t/t_enum_public.cpp
+++ b/test_regress/t/t_enum_public.cpp
@@ -17,8 +17,8 @@ int main (int argc, char *argv[]) {
     Verilated::debug(0);
 
     // Make sure public tag worked
-    if (Vt_enum_public_p3::ZERO || Vt_enum_public_p3::ONE) {}
-    if (Vt_enum_public_p62::ZERO || Vt_enum_public_p62::ALLONE) {}
+    if (Vt_enum_public_p3::ZERO == Vt_enum_public_p3::ONE) {}
+    if (Vt_enum_public_p62::ZERO == Vt_enum_public_p62::ALLONE) {}
 
     for (int i = 0; i < 10; i++) {
 	topp->eval();
diff --git a/test_regress/t/t_param_public.cpp b/test_regress/t/t_param_public.cpp
index 59c33382f..bdceb7470 100644
--- a/test_regress/t/t_param_public.cpp
+++ b/test_regress/t/t_param_public.cpp
@@ -16,7 +16,7 @@ int main (int argc, char *argv[]) {
     Verilated::debug(0);
 
     // Make sure public tag worked
-    if (Vt_param_public_p::INPACK) {}
+    if (Vt_param_public_p::INPACK == Vt_param_public_p::INPACK) {}
 
     for (int i = 0; i < 10; i++) {
 	topp->eval();