PosixModuleBuiltins: simple sym links for dirs

Author: cosminbasca

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/modules/PosixModuleBuiltins.java

@@ -83,8 +83,6 @@
 import java.util.Set;
 import java.util.concurrent.TimeUnit;
 
-import com.oracle.graal.python.nodes.PGuards;
-import com.oracle.graal.python.util.OverflowException;
 import org.graalvm.nativeimage.ImageInfo;
 import org.graalvm.nativeimage.ProcessProperties;
 
@@ -121,6 +119,7 @@
 import com.oracle.graal.python.builtins.objects.socket.SocketBuiltins;
 import com.oracle.graal.python.builtins.objects.tuple.PTuple;
 import com.oracle.graal.python.nodes.ErrorMessages;
+import com.oracle.graal.python.nodes.PGuards;
 import com.oracle.graal.python.nodes.SpecialMethodNames;
 import com.oracle.graal.python.nodes.attributes.ReadAttributeFromObjectNode;
 import com.oracle.graal.python.nodes.expression.IsExpressionNode.IsNode;
@@ -146,6 +145,7 @@
 import com.oracle.graal.python.runtime.sequence.storage.ByteSequenceStorage;
 import com.oracle.graal.python.runtime.sequence.storage.SequenceStorage;
 import com.oracle.graal.python.util.FileDeleteShutdownHook;
+import com.oracle.graal.python.util.OverflowException;
 import com.oracle.truffle.api.CompilerDirectives;
 import com.oracle.truffle.api.CompilerDirectives.CompilationFinal;
 import com.oracle.truffle.api.CompilerDirectives.TruffleBoundary;
@@ -1972,8 +1972,8 @@ static String ctermid() {
     @GenerateNodeFactory
     public abstract static class SymlinkNode extends PythonBuiltinNode {
 
-        @Specialization(guards = {"isNoValue(targetIsDir)", "isNoValue(dirFd)"}, limit = "1")
-        PNone doSimple(VirtualFrame frame, Object srcObj, Object dstObj, @SuppressWarnings("unused") PNone targetIsDir, @SuppressWarnings("unused") PNone dirFd,
+        @Specialization(guards = {"isNoValue(dirFd)"}, limit = "1")
+        PNone doSimple(VirtualFrame frame, Object srcObj, Object dstObj, @SuppressWarnings("unused") Object targetIsDir, @SuppressWarnings("unused") PNone dirFd,
                         @CachedLibrary("srcObj") PythonObjectLibrary libSrc,
                         @CachedLibrary("dstObj") PythonObjectLibrary libDst) {
             String src = libSrc.asPath(srcObj);