diff --git a/base-test/org.eclipse.jdt.groovy.core.tests.compiler/src/org/eclipse/jdt/groovy/core/tests/xform/StaticCompilationTests.java b/base-test/org.eclipse.jdt.groovy.core.tests.compiler/src/org/eclipse/jdt/groovy/core/tests/xform/StaticCompilationTests.java
index 23728a3673..bd1cbaae44 100644
--- a/base-test/org.eclipse.jdt.groovy.core.tests.compiler/src/org/eclipse/jdt/groovy/core/tests/xform/StaticCompilationTests.java
+++ b/base-test/org.eclipse.jdt.groovy.core.tests.compiler/src/org/eclipse/jdt/groovy/core/tests/xform/StaticCompilationTests.java
@@ -5481,6 +5481,28 @@ public void testCompileStatic9883() {
             "----------\n");
     }
 
+    @Test
+    public void testCompileStatic9885() {
+        //@formatter:off
+        String[] sources = {
+            "Main.groovy",
+            "@groovy.transform.ToString\n" +
+            "class C {\n" +
+            "  String p\n" +
+            "}\n" +
+            "@groovy.transform.CompileStatic\n" +
+            "void test(String string, whatever) {\n" +
+            "  print new C(p: string.trim() ?: \"$whatever\")\n" +
+            "}\n" +
+            "test('x','y')\n" +
+            "test(' ','y')\n" +
+            "test(' ',123)\n",
+        };
+        //@formatter:on
+
+        runConformTest(sources, "C(x)C(y)C(123)");
+    }
+
     @Test
     public void testCompileStatic9892() {
         //@formatter:off
diff --git a/base/org.codehaus.groovy25/src/org/codehaus/groovy/transform/stc/StaticTypeCheckingVisitor.java b/base/org.codehaus.groovy25/src/org/codehaus/groovy/transform/stc/StaticTypeCheckingVisitor.java
index 71e1543e83..f37ec0b096 100644
--- a/base/org.codehaus.groovy25/src/org/codehaus/groovy/transform/stc/StaticTypeCheckingVisitor.java
+++ b/base/org.codehaus.groovy25/src/org/codehaus/groovy/transform/stc/StaticTypeCheckingVisitor.java
@@ -1355,7 +1355,15 @@ protected void checkGroovyConstructorMap(final Expression receiver, final ClassN
                     ClassNode valueType = getType(entryExpression.getValueExpression());
                     MethodNode setter = receiverType.getSetterMethod("set" + MetaClassHelper.capitalize(pexp.getPropertyAsString()), false);
                     ClassNode toBeAssignedTo = setter == null ? lookup.get() : setter.getParameters()[0].getType();
+                    /* GRECLIPSE edit -- GROOVY-9885
                     if (!isAssignableTo(valueType, toBeAssignedTo)
+                    */
+                    Expression valueExpression = entryExpression.getValueExpression();
+                    BinaryExpression assign = new BinaryExpression(keyExpr, GeneralUtils.ASSIGN, valueExpression);
+                    assign.setSourcePosition(entryExpression);
+                    ClassNode resultType = getResultType(toBeAssignedTo, ASSIGN, valueType, assign);
+                    if (!checkCompatibleAssignmentTypes(toBeAssignedTo, resultType, valueExpression)
+                    // GRECLIPSE end
                             && !extension.handleIncompatibleAssignment(toBeAssignedTo, valueType, entryExpression)) {
                         addAssignmentError(toBeAssignedTo, valueType, entryExpression);
                     }
diff --git a/base/org.codehaus.groovy30/src/org/codehaus/groovy/transform/stc/StaticTypeCheckingVisitor.java b/base/org.codehaus.groovy30/src/org/codehaus/groovy/transform/stc/StaticTypeCheckingVisitor.java
index 3f6270930b..d2ac39c0c5 100644
--- a/base/org.codehaus.groovy30/src/org/codehaus/groovy/transform/stc/StaticTypeCheckingVisitor.java
+++ b/base/org.codehaus.groovy30/src/org/codehaus/groovy/transform/stc/StaticTypeCheckingVisitor.java
@@ -94,6 +94,7 @@
 import org.codehaus.groovy.ast.stmt.SwitchStatement;
 import org.codehaus.groovy.ast.stmt.TryCatchStatement;
 import org.codehaus.groovy.ast.stmt.WhileStatement;
+import org.codehaus.groovy.ast.tools.GeneralUtils;
 import org.codehaus.groovy.ast.tools.GenericsUtils;
 import org.codehaus.groovy.ast.tools.WideningCategories;
 import org.codehaus.groovy.classgen.ReturnAdder;
@@ -1314,7 +1315,15 @@ protected void checkGroovyConstructorMap(final Expression receiver, final ClassN
                     ClassNode valueType = getType(entryExpression.getValueExpression());
                     MethodNode setter = receiverType.getSetterMethod(getSetterName(pexp.getPropertyAsString()), false);
                     ClassNode toBeAssignedTo = setter == null ? lookup.get() : setter.getParameters()[0].getType();
+                    /* GRECLIPSE edit -- GROOVY-9885
                     if (!isAssignableTo(valueType, toBeAssignedTo)
+                    */
+                    Expression valueExpression = entryExpression.getValueExpression();
+                    BinaryExpression assign = new BinaryExpression(keyExpr, GeneralUtils.ASSIGN, valueExpression);
+                    assign.setSourcePosition(entryExpression);
+                    ClassNode resultType = getResultType(toBeAssignedTo, ASSIGN, valueType, assign);
+                    if (!checkCompatibleAssignmentTypes(toBeAssignedTo, resultType, valueExpression)
+                    // GRECLIPSE end
                             && !extension.handleIncompatibleAssignment(toBeAssignedTo, valueType, entryExpression)) {
                         addAssignmentError(toBeAssignedTo, valueType, entryExpression);
                     }
diff --git a/base/org.codehaus.groovy40/src/org/codehaus/groovy/transform/stc/StaticTypeCheckingVisitor.java b/base/org.codehaus.groovy40/src/org/codehaus/groovy/transform/stc/StaticTypeCheckingVisitor.java
index 2d1d8f5442..a0a1575c59 100644
--- a/base/org.codehaus.groovy40/src/org/codehaus/groovy/transform/stc/StaticTypeCheckingVisitor.java
+++ b/base/org.codehaus.groovy40/src/org/codehaus/groovy/transform/stc/StaticTypeCheckingVisitor.java
@@ -94,6 +94,7 @@
 import org.codehaus.groovy.ast.stmt.SwitchStatement;
 import org.codehaus.groovy.ast.stmt.TryCatchStatement;
 import org.codehaus.groovy.ast.stmt.WhileStatement;
+import org.codehaus.groovy.ast.tools.GeneralUtils;
 import org.codehaus.groovy.ast.tools.GenericsUtils;
 import org.codehaus.groovy.ast.tools.WideningCategories;
 import org.codehaus.groovy.classgen.ReturnAdder;
@@ -1275,10 +1276,7 @@ protected void typeCheckAssignment(final BinaryExpression assignmentExpression,
         ClassNode wrappedRHS = adjustTypeForSpreading(inferredRightExpressionType, leftExpression);
 
         // check types are compatible for assignment
-        boolean compatible = checkCompatibleAssignmentTypes(leftRedirect, wrappedRHS, rightExpression);
-
-
-        if (!compatible) {
+        if (!checkCompatibleAssignmentTypes(leftRedirect, wrappedRHS, rightExpression)) {
             if (!extension.handleIncompatibleAssignment(leftExpressionType, inferredRightExpressionType, assignmentExpression)) {
                 addAssignmentError(leftExpressionType, inferredRightExpressionType, assignmentExpression.getRightExpression());
             }
@@ -1309,7 +1307,15 @@ protected void checkGroovyConstructorMap(final Expression receiver, final ClassN
                     ClassNode valueType = getType(entryExpression.getValueExpression());
                     MethodNode setter = receiverType.getSetterMethod(getSetterName(pexp.getPropertyAsString()), false);
                     ClassNode toBeAssignedTo = setter == null ? lookup.get() : setter.getParameters()[0].getType();
+                    /* GRECLIPSE edit -- GROOVY-9885
                     if (!isAssignableTo(valueType, toBeAssignedTo)
+                    */
+                    Expression valueExpression = entryExpression.getValueExpression();
+                    BinaryExpression assign = new BinaryExpression(keyExpr, GeneralUtils.ASSIGN, valueExpression);
+                    assign.setSourcePosition(entryExpression);
+                    ClassNode resultType = getResultType(toBeAssignedTo, ASSIGN, valueType, assign);
+                    if (!checkCompatibleAssignmentTypes(toBeAssignedTo, resultType, valueExpression)
+                    // GRECLIPSE end
                             && !extension.handleIncompatibleAssignment(toBeAssignedTo, valueType, entryExpression)) {
                         addAssignmentError(toBeAssignedTo, valueType, entryExpression);
                     }