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Eric Milles edited comment on GROOVY-9853 at 5/21/22 3:10 PM: -------------------------------------------------------------- Isolated a bit further: {code:groovy} @groovy.transform.CompileStatic def test() { java.util.function.Function<CharSequence> f = CharSequence::length f.applyAsInt("") } print test() {code} Java equivalent that runs successfully: {code:java} public class Groovy9853 { public static void main(String[] args) throws Exception { java.util.function.ToIntFunction<CharSequence> f = CharSequence::length; System.err.println(f.applyAsInt("")); } } {code} {code} // Compiled from Groovy9853.java (version 1.8 : 52.0, super bit) public class Groovy9853 { // Method descriptor #6 ()V // Stack: 1, Locals: 1 public Temporary(); 0 aload_0 [this] 1 invokespecial java.lang.Object() [8] 4 return Line numbers: [pc: 0, line: 3] Local variable table: [pc: 0, pc: 5] local: this index: 0 type: Groovy9853 // Method descriptor #15 ([Ljava/lang/String;)V // Stack: 3, Locals: 2 public static void main(java.lang.String[] args) throws java.lang.Exception; 0 invokedynamic 0 applyAsInt() : java.util.function.ToIntFunction [19] 5 astore_1 [f] 6 getstatic java.lang.System.err : java.io.PrintStream [23] 9 aload_1 [f] 10 ldc <String ""> [29] 12 invokeinterface java.util.function.ToIntFunction.applyAsInt(java.lang.Object) : int [31] [nargs: 2] 17 invokevirtual java.io.PrintStream.println(int) : void [36] 20 return Line numbers: [pc: 0, line: 5] [pc: 6, line: 6] [pc: 20, line: 25] Local variable table: [pc: 0, pc: 21] local: args index: 0 type: java.lang.String[] [pc: 6, pc: 21] local: f index: 1 type: java.util.function.ToIntFunction Local variable type table: [pc: 6, pc: 21] local: f index: 1 type: java.util.function.ToIntFunction<java.lang.CharSequence> Method Parameters: args Inner classes: [inner class info: #70 java/lang/invoke/MethodHandles$Lookup, outer class info: #72 java/lang/invoke/MethodHandles inner name: #74 Lookup, accessflags: 25 public static final] Bootstrap methods: 0 : # 58 invokestatic java/lang/invoke/LambdaMetafactory.metafactory:(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodHandle;Ljava/lang/invoke/MethodType;)Ljava/lang/invoke/CallSite; Method arguments: #59 (Ljava/lang/Object;)I #66 null #68 (Ljava/lang/CharSequence;)I } {code} was (Author: emilles): Isolated a bit further: {code:groovy} @groovy.transform.CompileStatic def test() { java.util.function.Function<CharSequence> f = CharSequence::length f.applyAsInt("") } print test() {code} Java equivalent that runs successfully: {code:java} public class Groovy9853 { public static void main(String[] args) throws Exception { java.util.function.ToIntFunction<CharSequence> f = CharSequence::length; System.err.println(f.applyAsInt("")); } } {code} {code} // Compiled from Temporary.java (version 1.8 : 52.0, super bit) public class Temporary { // Method descriptor #6 ()V // Stack: 1, Locals: 1 public Temporary(); 0 aload_0 [this] 1 invokespecial java.lang.Object() [8] 4 return Line numbers: [pc: 0, line: 3] Local variable table: [pc: 0, pc: 5] local: this index: 0 type: Temporary // Method descriptor #15 ([Ljava/lang/String;)V // Stack: 3, Locals: 2 public static void main(java.lang.String[] args) throws java.lang.Exception; 0 invokedynamic 0 applyAsInt() : java.util.function.ToIntFunction [19] 5 astore_1 [f] 6 getstatic java.lang.System.err : java.io.PrintStream [23] 9 aload_1 [f] 10 ldc <String ""> [29] 12 invokeinterface java.util.function.ToIntFunction.applyAsInt(java.lang.Object) : int [31] [nargs: 2] 17 invokevirtual java.io.PrintStream.println(int) : void [36] 20 return Line numbers: [pc: 0, line: 5] [pc: 6, line: 6] [pc: 20, line: 25] Local variable table: [pc: 0, pc: 21] local: args index: 0 type: java.lang.String[] [pc: 6, pc: 21] local: f index: 1 type: java.util.function.ToIntFunction Local variable type table: [pc: 6, pc: 21] local: f index: 1 type: java.util.function.ToIntFunction<java.lang.CharSequence> Method Parameters: args Inner classes: [inner class info: #70 java/lang/invoke/MethodHandles$Lookup, outer class info: #72 java/lang/invoke/MethodHandles inner name: #74 Lookup, accessflags: 25 public static final] Bootstrap methods: 0 : # 58 invokestatic java/lang/invoke/LambdaMetafactory.metafactory:(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodHandle;Ljava/lang/invoke/MethodType;)Ljava/lang/invoke/CallSite; Method arguments: #59 (Ljava/lang/Object;)I #66 null #68 (Ljava/lang/CharSequence;)I } {code} > ClassFormatError using method reference on interface target > ----------------------------------------------------------- > > Key: GROOVY-9853 > URL: https://issues.apache.org/jira/browse/GROOVY-9853 > Project: Groovy > Issue Type: Bug > Affects Versions: 3.0.7, 4.0.2 > Reporter: Christopher Smith > Priority: Major > > After upgrading to 3.0.7, using {{interfaceField::method}} is resulting in > bytecode output containing an InterfaceMethodref that looks as expected. When > running it in the Eclipse JUnit runner, however (which I think is > unimportant), I'm getting a loading error from the JVM: > {code} > Caused by: java.lang.ClassFormatError: Invalid constant pool index 130 in > class file com/example/sendgrid/SendgridMailSender (not a method) > {code} > where the offending constant is > {code} > #130 = InterfaceMethodref #126.#129 // > com/sendgrid/SendGridAPI.api:(Lcom/sendgrid/Request;)Lcom/sendgrid/Response; > {code} > from the 4.6.8 SendGrid SDK. > Compiling with 3.0.6 seems to work. Replacing {{::}} with {{.&}} seems to > work. > The JVM is 11.0.9-hs-adpt. -- This message was sent by Atlassian Jira (v8.20.7#820007)