diff --git a/src/compiler/scala/tools/nsc/backend/icode/GenICode.scala b/src/compiler/scala/tools/nsc/backend/icode/GenICode.scala index 44d7a1929b04..71a5b8527189 100644 --- a/src/compiler/scala/tools/nsc/backend/icode/GenICode.scala +++ b/src/compiler/scala/tools/nsc/backend/icode/GenICode.scala @@ -954,10 +954,7 @@ abstract class GenICode extends SubComponent { case _ => } ctx1.bb.emit(cm, tree.pos) - - if (sym == ctx1.method.symbol) { - ctx1.method.recursive = true - } + ctx1.method.updateRecursive(sym) generatedType = if (sym.isClassConstructor) UNIT else toTypeKind(sym.info.resultType); diff --git a/src/compiler/scala/tools/nsc/backend/icode/Members.scala b/src/compiler/scala/tools/nsc/backend/icode/Members.scala index b74770f051cf..00bcf603cf8a 100644 --- a/src/compiler/scala/tools/nsc/backend/icode/Members.scala +++ b/src/compiler/scala/tools/nsc/backend/icode/Members.scala @@ -185,6 +185,10 @@ trait Members { this } + final def updateRecursive(called: Symbol): Unit = { + recursive ||= (called == symbol) + } + def addLocal(l: Local): Local = findOrElse(locals)(_ == l) { locals ::= l ; l } def addParam(p: Local): Unit = diff --git a/src/compiler/scala/tools/nsc/symtab/classfile/ICodeReader.scala b/src/compiler/scala/tools/nsc/symtab/classfile/ICodeReader.scala index c304c18c4fa9..d0c540a2c6e6 100644 --- a/src/compiler/scala/tools/nsc/symtab/classfile/ICodeReader.scala +++ b/src/compiler/scala/tools/nsc/symtab/classfile/ICodeReader.scala @@ -489,23 +489,28 @@ abstract class ICodeReader extends ClassfileParser { case JVM.invokevirtual => val m = pool.getMemberSymbol(in.nextChar, false); size += 2 code.emit(CALL_METHOD(m, Dynamic)) + method.updateRecursive(m) case JVM.invokeinterface => val m = pool.getMemberSymbol(in.nextChar, false); size += 4 in.skip(2) code.emit(CALL_METHOD(m, Dynamic)) + // invokeinterface can't be recursive case JVM.invokespecial => val m = pool.getMemberSymbol(in.nextChar, false); size += 2 val style = if (m.name == nme.CONSTRUCTOR || m.isPrivate) Static(true) else SuperCall(m.owner.name); code.emit(CALL_METHOD(m, style)) + method.updateRecursive(m) case JVM.invokestatic => val m = pool.getMemberSymbol(in.nextChar, true); size += 2 if (isBox(m)) code.emit(BOX(toTypeKind(m.info.paramTypes.head))) else if (isUnbox(m)) code.emit(UNBOX(toTypeKind(m.info.resultType))) - else + else { code.emit(CALL_METHOD(m, Static(false))) + method.updateRecursive(m) + } case JVM.invokedynamic => // TODO, this is just a place holder. A real implementation must parse the class constant entry debuglog("Found JVM invokedynamic instructionm, inserting place holder ICode INVOKE_DYNAMIC.") diff --git a/test/files/pos/t8062.flags b/test/files/pos/t8062.flags new file mode 100644 index 000000000000..49d036a8879c --- /dev/null +++ b/test/files/pos/t8062.flags @@ -0,0 +1 @@ +-optimize diff --git a/test/files/pos/t8062/A_1.scala b/test/files/pos/t8062/A_1.scala new file mode 100644 index 000000000000..ca0411dae811 --- /dev/null +++ b/test/files/pos/t8062/A_1.scala @@ -0,0 +1,5 @@ +package warmup + +object Warmup { + def filter[A](p: Any => Boolean): Any = filter[Any](p) +} diff --git a/test/files/pos/t8062/B_2.scala b/test/files/pos/t8062/B_2.scala new file mode 100644 index 000000000000..f0a6761488a7 --- /dev/null +++ b/test/files/pos/t8062/B_2.scala @@ -0,0 +1,3 @@ +object Test { + warmup.Warmup.filter[Any](x => false) +}