Added two struct value error tests.

src/main/java/dk/camelot64/kickc/passes/Pass0GenerateStatementSequence.java

@@ -463,7 +463,8 @@ public class Pass0GenerateStatementSequence extends KickCBaseVisitor<Object> {
    @Override
    public Object visitDeclTypes(KickCParser.DeclTypesContext ctx) {
       List<KickCParser.DirectiveContext> directive = ctx.directive();
-      this.declVarType = (SymbolType) visit(ctx.typeDecl());
+      SymbolType varType = (SymbolType) visit(ctx.typeDecl());
+      this.declVarType = varType;
       this.declVarDirectives = getDirectives(directive);
       this.declVarComments = getCommentsSymbol(ctx.getParent());
       return null;
@@ -1195,6 +1196,9 @@ public class Pass0GenerateStatementSequence extends KickCBaseVisitor<Object> {
    public Object visitStructRef(KickCParser.StructRefContext ctx) {
       String structDefName = ctx.NAME().getText();
       StructDefinition structDefinition = getCurrentScope().getStructDefinition(structDefName);
+      if(structDefinition==null) {
+         throw new CompileError("Unknown struct type "+structDefName, new StatementSource(ctx));
+      }
       return structDefinition.getType();
    }
 

src/main/java/dk/camelot64/kickc/passes/Pass1UnwindStructValues.java

@@ -1,9 +1,7 @@
 package dk.camelot64.kickc.passes;
 
-import dk.camelot64.kickc.model.Comment;
-import dk.camelot64.kickc.model.ControlFlowBlock;
+import dk.camelot64.kickc.model.*;
 import dk.camelot64.kickc.model.InternalError;
-import dk.camelot64.kickc.model.Program;
 import dk.camelot64.kickc.model.iterator.ProgramValueIterator;
 import dk.camelot64.kickc.model.statements.Statement;
 import dk.camelot64.kickc.model.statements.StatementAssignment;
@@ -120,7 +118,7 @@ public class Pass1UnwindStructValues extends Pass1Base {
                               stmtIt.remove();
                            }
                         } else {
-                           throw new RuntimeException("Struct assignment not implemented yet " + statement.toString(getProgram(), false));
+                           throw new CompileError("Incompatible struct assignment " + statement.toString(getProgram(), false), statement);
                         }
                      }
                   }

src/test/java/dk/camelot64/kickc/test/TestPrograms.java

@@ -50,7 +50,15 @@ public class TestPrograms {
       compileAndCompare("struct-ptr-0", log());
    }
 
+   @Test
+   public void testError1() throws IOException, URISyntaxException {
+      assertError("struct-err-1", "Incompatible struct assignment");
+   }
 
+   @Test
+   public void testError0() throws IOException, URISyntaxException {
+      assertError("struct-err-0", "Unknown struct type");
+   }
 
    @Test
    public void testStruct5() throws IOException, URISyntaxException {

src/test/kc/struct-err-0.kc

@@ -0,0 +1,6 @@
+// Undeclared struct
+
+void main() {
+    struct Point p1;
+}
+

src/test/kc/struct-err-1.kc

@@ -0,0 +1,23 @@
+// Incompatible struct assignment
+
+struct Point1 {
+    byte x;
+    byte y;
+};
+
+struct Point2 {
+    byte x;
+    byte y;
+};
+
+void main() {
+    struct Point1 p1;
+    struct Point2 p2;
+    p1.x = 4;
+    p2 = p1;
+    const byte* SCREEN = 0x0400;
+    SCREEN[0] = p2.x;
+    SCREEN[0] = p2.y;
+
+}
+