COMP: sign check to avoid warnings about new[] range

src/OpenFOAM/containers/Lists/List/List.C

@@ -50,6 +50,7 @@ void Foam::List<T>::doResize(const label newSize)
     {
         if (newSize > 0)
         {
+            // With sign-check to avoid spurious -Walloc-size-larger-than
             T* nv = new T[newSize];
 
             const label overlap = min(this->size_, newSize);

src/OpenFOAM/containers/Lists/List/ListI.H

@@ -31,8 +31,9 @@ License
 template<class T>
 inline void Foam::List<T>::doAlloc()
 {
-    if (this->size_)
+    if (this->size_ > 0)
     {
+        // With sign-check to avoid spurious -Walloc-size-larger-than
         this->v_ = new T[this->size_];
     }
 }

src/OpenFOAM/matrices/Matrix/MatrixI.H

@@ -35,8 +35,9 @@ inline void Foam::Matrix<Form, Type>::doAlloc()
 {
     const label len = size();
 
-    if (len)
+    if (len > 0)
     {
+        // With sign-check to avoid spurious -Walloc-size-larger-than
         v_ = new Type[len];
     }
 }