1 files changed, 23 insertions, 0 deletions
diff --git a/src/vhdl/parse.adb b/src/vhdl/parse.adb
index 2991e07..d456131 100644
--- a/src/vhdl/parse.adb
+++ b/src/vhdl/parse.adb
@@ -6140,6 +6140,26 @@ package body Parse is
       return Res;
    end Parse_Process_Statement;
 
+   procedure Check_Formal_Form (Formal : Iir) is
+   begin
+      if Formal = Null_Iir then
+         return;
+      end if;
+
+      case Get_Kind (Formal) is
+         when Iir_Kind_Simple_Name
+           | Iir_Kind_Slice_Name
+           | Iir_Kind_Selected_Name =>
+            null;
+         when Iir_Kind_Parenthesis_Name =>
+            --  Could be an indexed name, so nothing to check within the
+            --  parenthesis.
+            null;
+         when others =>
+            Error_Msg_Parse ("incorrect formal name", Formal);
+      end case;
+   end Check_Formal_Form;
+
    -- precond : NEXT_TOKEN
    -- postcond: NEXT_TOKEN
    --
@@ -6216,6 +6236,9 @@ package body Parse is
                when Tok_Double_Arrow =>
                   Formal := Actual;
 
+                  --  Check that FORMAL is a name and not an expression.
+                  Check_Formal_Form (Formal);
+
                   --  Skip '=>'
                   Scan;
                   Loc := Get_Token_Location;