fix #2012

TestSuite/CompilationSamples/GraphWPF.pas

@@ -1620,6 +1620,11 @@ begin
   
   var sz := Size(host.DataContext);
   
+  if sz.Width = 0 then 
+    sz.Width := GraphWindow.Width;
+  if sz.Height = 0 then 
+    sz.Height := GraphWindow.Height;
+  
   var bmp := new RenderTargetBitmap(Round(sz.Width*scalex), Round(sz.Height*scaley), dpiX, dpiY, PixelFormats.Pbgra32);
 
   var myvis := new DrawingVisual();

TestSuite/units/u_overloads3.pas

@@ -0,0 +1,5 @@
+unit u_overloads3;
+function f(a: integer) := int64(20);
+
+begin
+end.

TestSuite/usesunits/use_overloads3.pas

@@ -0,0 +1,7 @@
+uses u_overloads3; 
+function f(a: integer): integer := 10;
+
+begin
+  var r := f(0);
+  assert(r = 10);
+end.

TreeConverter/TreeConversion/convertion_data_and_alghoritms.cs

@@ -1432,6 +1432,15 @@ namespace PascalABCCompiler.TreeConverter
                     }
                 }
             }
+            if (left_func.return_value_type != null && right_func.return_value_type != null && function_eq_params(left_func, right_func, true))
+            {
+                var tc = type_table.compare_types(left_func.return_value_type, right_func.return_value_type);
+                if (tc == type_compare.less_type)
+                    return method_compare.greater_method;
+                if (tc == type_compare.greater_type)
+                    return method_compare.less_method;
+            }
+                
             return method_compare.not_comparable_methods;
 		}