Internals: Fix misc internal coverage holes. No functional change intended.

src/V3Global.cpp

@@ -36,10 +36,6 @@ AstNetlist* V3Global::makeNetlist() {
 
 void V3Global::checkTree() { rootp()->checkTree(); }
 
-void V3Global::clear() {
-    if (m_rootp) VL_DO_CLEAR(m_rootp->deleteTree(), m_rootp = NULL);
-}
-
 void V3Global::readFiles() {
     // NODE STATE
     //   AstNode::user4p()      // VSymEnt*    Package and typedef symbol names

src/V3Global.h

@@ -105,7 +105,6 @@ public:
         UASSERT(!m_rootp, "call once");
         m_rootp = makeNetlist();
     }
-    void clear();
     // ACCESSORS (general)
     AstNetlist* rootp() const { return m_rootp; }
     VWidthMinUsage widthMinUsage() const { return m_widthMinUsage; }

src/V3MergeCond.cpp

@@ -192,7 +192,7 @@ private:
                                 : new AstConst(rhsp->fileline(), AstConst::LogicFalse());
             }
         }
-        rhsp->v3fatal("Don't know how to fold expression");
+        rhsp->v3fatalSrc("Don't know how to fold expression");
     }
 
     void mergeEnd() {

src/V3Os.cpp

@@ -240,8 +240,6 @@ void V3Os::unlinkRegexp(const string& dir, const string& regexp) {
     }
 }
 
-std::string V3Os::getcwd() { return filenameRealPath("."); }
-
 //######################################################################
 // METHODS (random)
 

src/V3Os.h

@@ -53,7 +53,6 @@ public:
     // METHODS (directory utilities)
     static void createDir(const string& dirname);
     static void unlinkRegexp(const string& dir, const string& regexp);
-    static std::string getcwd();  // Return the current working directory
 
     // METHODS (random)
     static vluint64_t rand64(vluint64_t* statep);