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The following commit(s) were added to refs/heads/master by this push:
     new 7bc29825bc GROOVY-11829: check param types of standard methods and 
keep best fit
7bc29825bc is described below

commit 7bc29825bcc5548e678353cdb2443d19144e6a66
Author: Eric Milles <[email protected]>
AuthorDate: Thu Jan 1 14:59:42 2026 -0600

    GROOVY-11829: check param types of standard methods and keep best fit
---
 src/main/java/groovy/lang/MetaClassImpl.java       | 115 ++++++++++-----------
 .../codehaus/groovy/runtime/MetaClassHelper.java   |   5 -
 src/test/groovy/bugs/Groovy11829.groovy            |  78 ++++++++++++++
 .../{Groovy3871Bug.groovy => Groovy3871.groovy}    |  28 +++--
 src/test/groovy/bugs/Groovy8065.groovy             |   8 +-
 src/test/groovy/groovy/IfPropertyTest.groovy       |  12 +--
 6 files changed, 157 insertions(+), 89 deletions(-)

diff --git a/src/main/java/groovy/lang/MetaClassImpl.java 
b/src/main/java/groovy/lang/MetaClassImpl.java
index 98a25a1c9c..c2e1d5138e 100644
--- a/src/main/java/groovy/lang/MetaClassImpl.java
+++ b/src/main/java/groovy/lang/MetaClassImpl.java
@@ -2768,7 +2768,7 @@ public class MetaClassImpl implements MetaClass, 
MutableMetaClass {
         
//----------------------------------------------------------------------
         // generic set method
         
//----------------------------------------------------------------------
-        // check for a generic get method provided through a category
+        // check for a generic set method provided through a category
         if (method == null && !useSuper && !isStatic && 
GroovyCategorySupport.hasCategoryInCurrentThread()) {
             method = getCategoryMethodSetter(theClass, "set", true);
             if (method != null) arguments = new Object[]{name, newValue};
@@ -2994,14 +2994,13 @@ public class MetaClassImpl implements MetaClass, 
MutableMetaClass {
     
//--------------------------------------------------------------------------
 
     /**
-     * adds a MetaMethod to this class. WARNING: this method will not
+     * Adds a MetaMethod to this class. WARNING: this method will not
      * do the necessary steps for multimethod logic and using this
      * method doesn't mean, that a method added here is replacing another
      * method from a parent class completely. These steps are usually done
      * by initialize, which means if you need these steps, you have to add
      * the method before running initialize the first time.
      *
-     * @param method the MetaMethod
      * @see #initialize()
      */
     @Override
@@ -3020,69 +3019,75 @@ public class MetaClassImpl implements MetaClass, 
MutableMetaClass {
     }
 
     /**
-     * Checks if the metaMethod is a method from the GroovyObject interface 
such as setProperty, getProperty and invokeMethod
+     * Checks if the metaMethod is getProperty, setProperty, or invokeMethod.
      *
-     * @param metaMethod The metaMethod instance
      * @see GroovyObject
      */
-    protected final void checkIfGroovyObjectMethod(MetaMethod metaMethod) {
+    protected final void checkIfGroovyObjectMethod(final MetaMethod 
metaMethod) {
         if (metaMethod instanceof ClosureMetaMethod
                 || metaMethod instanceof NewInstanceMetaMethod
                 || metaMethod instanceof MixinInstanceMetaMethod) {
-            if (isGetPropertyMethod(metaMethod)) {
-                getPropertyMethod = metaMethod;
-            } else if (isInvokeMethod(metaMethod)) {
-                invokeMethodMethod = metaMethod;
-            } else if (isSetPropertyMethod(metaMethod)) {
-                setPropertyMethod = metaMethod;
+            switch (metaMethod.getName()) {
+              case GET_PROPERTY_METHOD:
+                if (checkMatch(metaMethod, getPropertyMethod, 
GETTER_MISSING_ARGS) && metaMethod.getReturnType() != Void.TYPE) {
+                    getPropertyMethod = metaMethod;
+                }
+                break;
+              case SET_PROPERTY_METHOD:
+                if (checkMatch(metaMethod, setPropertyMethod, 
SETTER_MISSING_ARGS)) {
+                    setPropertyMethod = metaMethod;
+                }
+                break;
+              case INVOKE_METHOD_METHOD:
+                if (checkMatch(metaMethod, invokeMethodMethod, 
METHOD_MISSING_ARGS)) {
+                    invokeMethodMethod = metaMethod;
+                }
+                break;
             }
         }
     }
 
-    private static boolean isSetPropertyMethod(MetaMethod metaMethod) {
-        return SET_PROPERTY_METHOD.equals(metaMethod.getName()) && 
metaMethod.getParameterTypes().length == 2;
-    }
-
-    private static boolean isGetPropertyMethod(MetaMethod metaMethod) {
-        return GET_PROPERTY_METHOD.equals(metaMethod.getName());
-    }
-
-    private static boolean isInvokeMethod(MetaMethod metaMethod) {
-        return INVOKE_METHOD_METHOD.equals(metaMethod.getName()) && 
metaMethod.getParameterTypes().length == 2;
-    }
-
-    private void checkIfStdMethod(MetaMethod method) {
-        checkIfGroovyObjectMethod(method);
-
-        if (isGenericGetMethod(method) && genericGetMethod == null) {
-            genericGetMethod = method;
-        } else if (MetaClassHelper.isGenericSetMethod(method) && 
genericSetMethod == null) {
-            genericSetMethod = method;
-        }
-        if (method.getName().equals(PROPERTY_MISSING)) {
-            CachedClass[] parameterTypes = method.getParameterTypes();
-            if (parameterTypes.length == 1) {
-                propertyMissingGet = method;
+    private void checkIfStdMethod(final MetaMethod metaMethod) {
+        switch (metaMethod.getName()) {
+          case GET_PROPERTY_METHOD:
+          case SET_PROPERTY_METHOD:
+          case INVOKE_METHOD_METHOD:
+            checkIfGroovyObjectMethod(metaMethod);
+            break;
+          case "get":
+            if (checkMatch(metaMethod, genericGetMethod, GETTER_MISSING_ARGS) 
&& metaMethod.getReturnType() != Void.TYPE) {
+                genericGetMethod = metaMethod;
             }
-        }
-        if (propertyMissingSet == null && 
method.getName().equals(PROPERTY_MISSING)) {
-            CachedClass[] parameterTypes = method.getParameterTypes();
-            if (parameterTypes.length == 2) {
-                propertyMissingSet = method;
+            break;
+          case "set":
+            if (checkMatch(metaMethod, genericSetMethod, SETTER_MISSING_ARGS)) 
{
+                genericSetMethod = metaMethod;
             }
-        }
-        if (method.getName().equals(METHOD_MISSING)) {
-            CachedClass[] parameterTypes = method.getParameterTypes();
-            if (parameterTypes.length == 2
-                    && parameterTypes[0].getTheClass() == String.class
-                    && parameterTypes[1].getTheClass() == Object.class) {
-                methodMissing = method;
+            break;
+          case METHOD_MISSING:
+            if (checkMatch(metaMethod, methodMissing, METHOD_MISSING_ARGS)) {
+                methodMissing = metaMethod;
+            }
+            break;
+          case PROPERTY_MISSING:
+            if (checkMatch(metaMethod, propertyMissingSet, 
SETTER_MISSING_ARGS)) {
+                propertyMissingSet = metaMethod;
+            } else if (checkMatch(metaMethod, propertyMissingGet, 
GETTER_MISSING_ARGS) && metaMethod.getReturnType() != Void.TYPE) {
+                propertyMissingGet = metaMethod;
+            }
+            break;
+          default:
+            if (theCachedClass.isNumber) {
+                
NumberMathModificationInfo.instance.checkIfStdMethod(metaMethod);
             }
         }
+    }
 
-        if (theCachedClass.isNumber) {
-            NumberMathModificationInfo.instance.checkIfStdMethod(method);
-        }
+    private static boolean checkMatch(final MetaMethod newMethod, final 
MetaMethod oldMethod, final Class<?>[] arguments) {
+        return newMethod.isValidExactMethod(arguments) && (oldMethod == null
+            // GROOVY-11829: new method may provide closer match to arguments
+            || MetaClassHelper.calculateParameterDistance(arguments, newMethod)
+                <= MetaClassHelper.calculateParameterDistance(arguments, 
oldMethod));
     }
 
     protected boolean isInitialized() {
@@ -3298,14 +3303,6 @@ public class MetaClassImpl implements MetaClass, 
MutableMetaClass {
         return matchesDistance;
     }
 
-    private static boolean isGenericGetMethod(MetaMethod method) {
-        if ("get".equals(method.getName())) {
-            CachedClass[] parameterTypes = method.getParameterTypes();
-            return parameterTypes.length == 1 && 
parameterTypes[0].getTheClass() == String.class;
-        }
-        return false;
-    }
-
     /**
      * Complete the initialisation process. After this method
      * is called no methods should be added to the metaclass.
diff --git a/src/main/java/org/codehaus/groovy/runtime/MetaClassHelper.java 
b/src/main/java/org/codehaus/groovy/runtime/MetaClassHelper.java
index 5aba7fc81f..acd9ca8969 100644
--- a/src/main/java/org/codehaus/groovy/runtime/MetaClassHelper.java
+++ b/src/main/java/org/codehaus/groovy/runtime/MetaClassHelper.java
@@ -809,11 +809,6 @@ public class MetaClassHelper {
                 || classToTransformFrom == Byte.class;
     }
 
-    public static boolean isGenericSetMethod(MetaMethod method) {
-        return ("set".equals(method.getName()))
-                && method.getParameterTypes().length == 2;
-    }
-
     protected static boolean isSuperclass(Class clazz, Class superclass) {
         while (clazz != null) {
             if (clazz == superclass) return true;
diff --git a/src/test/groovy/bugs/Groovy11829.groovy 
b/src/test/groovy/bugs/Groovy11829.groovy
new file mode 100644
index 0000000000..25b7590167
--- /dev/null
+++ b/src/test/groovy/bugs/Groovy11829.groovy
@@ -0,0 +1,78 @@
+/*
+ *  Licensed to the Apache Software Foundation (ASF) under one
+ *  or more contributor license agreements.  See the NOTICE file
+ *  distributed with this work for additional information
+ *  regarding copyright ownership.  The ASF licenses this file
+ *  to you under the Apache License, Version 2.0 (the
+ *  "License"); you may not use this file except in compliance
+ *  with the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing,
+ *  software distributed under the License is distributed on an
+ *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ *  KIND, either express or implied.  See the License for the
+ *  specific language governing permissions and limitations
+ *  under the License.
+ */
+package bugs
+
+import org.junit.jupiter.api.Test
+
+import static groovy.test.GroovyAssert.assertScript
+
+final class Groovy11829 {
+
+    @Test
+    void testCustomGetter() {
+        assertScript '''
+            class C {
+                def get(String name) {
+                    if (name == 'x') return 'yz'
+                }
+            }
+
+            def c = new C()
+            assert c.x == 'yz'
+            assert c.y == null
+        '''
+    }
+
+    @Test
+    void testCustomSetter() {
+        assertScript '''import static groovy.test.GroovyAssert.shouldFail
+            class C {
+                def set(String name, Object value) {
+                    if (name != 'x') throw PropertyMissingException(name, C)
+                }
+            }
+
+            def c = new C()
+            c.x = 'xyz'
+            shouldFail {
+                c.y = null
+            }
+        '''
+    }
+
+    @Test
+    void testCustomSetter2() {
+        assertScript '''import static groovy.test.GroovyAssert.shouldFail
+            class C {
+                def set(Object name, Object value) {
+                    throw AssertionError()
+                }
+                def set(String name, Object value) {
+                    if (name != 'x') throw PropertyMissingException(name, C)
+                }
+            }
+
+            def c = new C()
+            c.x = 'xyz'
+            shouldFail {
+                c.y = null
+            }
+        '''
+    }
+}
diff --git a/src/test/groovy/bugs/Groovy3871Bug.groovy 
b/src/test/groovy/bugs/Groovy3871.groovy
similarity index 76%
rename from src/test/groovy/bugs/Groovy3871Bug.groovy
rename to src/test/groovy/bugs/Groovy3871.groovy
index 413edc23f9..473b1958f8 100644
--- a/src/test/groovy/bugs/Groovy3871Bug.groovy
+++ b/src/test/groovy/bugs/Groovy3871.groovy
@@ -18,40 +18,39 @@
  */
 package bugs
 
-import groovy.test.GroovyTestCase
+import org.junit.jupiter.api.AfterEach
+import org.junit.jupiter.api.BeforeEach
+import org.junit.jupiter.api.Test
 
-/**
- * Fix for https://issues.apache.org/jira/browse/GROOVY-3871
- */
-class Groovy3871Bug extends GroovyTestCase {
+final class Groovy3871 {
 
-    protected void setUp() {
-        super.setUp()
-        G3871Base.metaClass = null
-        G3871Child.metaClass = null
+    @BeforeEach
+    void setUp() {
+        tearDown()
     }
 
-    protected void tearDown() {
+    @AfterEach
+    void tearDown() {
         G3871Base.metaClass = null
         G3871Child.metaClass = null
-        super.tearDown();
     }
 
+    @Test
     void testPropertyMissingInheritanceIssue() {
         // defining a propertyMissing on the base class
         G3871Base.metaClass.propertyMissing = { String name -> name }
         def baseInstance = new G3871Base()
-        assert baseInstance.someProp == "someProp"
+        assert baseInstance.someProp == 'someProp'
 
         // the child class inherits the propertyMissing
         def childInstance = new G3871Child()
-        assert childInstance.otherProp == "otherProp"
+        assert childInstance.otherProp == 'otherProp'
 
         // when a propertyMissing is registered for the child
         // it should be used over the inherited one
         G3871Child.metaClass.propertyMissing = { String name -> name.reverse() 
}
         def otherChildInstance = new G3871Child()
-        assert otherChildInstance.otherProp == "porPrehto"
+        assert otherChildInstance.otherProp == 'porPrehto'
     }
 }
 
@@ -60,4 +59,3 @@ class G3871Base { }
 
 /** a dummy child class */
 class G3871Child extends G3871Base { }
-
diff --git a/src/test/groovy/bugs/Groovy8065.groovy 
b/src/test/groovy/bugs/Groovy8065.groovy
index e69cae3870..b44a978804 100644
--- a/src/test/groovy/bugs/Groovy8065.groovy
+++ b/src/test/groovy/bugs/Groovy8065.groovy
@@ -18,19 +18,21 @@
  */
 package bugs
 
-import org.junit.Test
+import org.junit.jupiter.api.Test
 
 import static groovy.test.GroovyAssert.assertScript
 
 final class Groovy8065 {
+
     @Test
     void testMapWithCustomSetDuringAsTypeCast() {
         assertScript '''
             class MapWithSet extends LinkedHashMap {
-                void set(String k, String v) {
-                    put(k.toLowerCase(), v.toUpperCase())
+                void set(String k, Object v) {
+                    put(k.toLowerCase(), v?.toString()?.toUpperCase())
                 }
             }
+
             def m = [Foo: 'Bar'] as MapWithSet
             assert m == [foo: 'BAR']
         '''
diff --git a/src/test/groovy/groovy/IfPropertyTest.groovy 
b/src/test/groovy/groovy/IfPropertyTest.groovy
index 3172f59ef7..262dc6e139 100644
--- a/src/test/groovy/groovy/IfPropertyTest.groovy
+++ b/src/test/groovy/groovy/IfPropertyTest.groovy
@@ -18,31 +18,30 @@
  */
 package groovy
 
-import groovy.test.GroovyTestCase
+import org.junit.jupiter.api.Test
 
-class IfPropertyTest extends GroovyTestCase {
+final class IfPropertyTest {
 
     def dummy
 
     // This is because normal classes are not extensible, but scripts are 
extensible by default.
     Object get(String key) {
-        return dummy
+        dummy
     }
 
     void set(Object key, Object value) {
         dummy = value
     }
 
+    @Test
     void testIfNullPropertySet() {
         if (cheese == null) {
             cheese = 1
         }
-        if (cheese != 1) {
-            fail("Didn't change cheese")
-        }
         assert cheese == 1
     }
 
+    @Test
     void testIfNullPropertySetRecheck() {
         if (cheese == null) {
             cheese = 1
@@ -52,5 +51,4 @@ class IfPropertyTest extends GroovyTestCase {
         }
         assert cheese == 2
     }
-
 }

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