diff --git a/com.oracle.truffle.r.native/fficall/jni/src/rffiutils.c b/com.oracle.truffle.r.native/fficall/jni/src/rffiutils.c
index 346ba55cf2530c64bde446618e5c2525e4192932..a3e08bb2f228e61ed9c26a266c2d9384d2fdecad 100644
--- a/com.oracle.truffle.r.native/fficall/jni/src/rffiutils.c
+++ b/com.oracle.truffle.r.native/fficall/jni/src/rffiutils.c
@@ -73,7 +73,7 @@ void init_utils(JNIEnv *env) {
RRuntimeClass = checkFindClass(env, "com/oracle/truffle/r/runtime/RRuntime");
RInternalErrorClass = checkFindClass(env, "com/oracle/truffle/r/runtime/RInternalError");
unimplementedMethodID = checkGetMethodID(env, RInternalErrorClass, "unimplemented", "(Ljava/lang/String;)Ljava/lang/RuntimeException;", 1);
- createSymbolMethodID = checkGetMethodID(env, RDataFactoryClass, "createSymbol", "(Ljava/lang/String;)Lcom/oracle/truffle/r/runtime/data/RSymbol;", 1);
+ createSymbolMethodID = checkGetMethodID(env, RDataFactoryClass, "createSymbolInterned", "(Ljava/lang/String;)Lcom/oracle/truffle/r/runtime/data/RSymbol;", 1);
validateMethodID = checkGetMethodID(env, CallRFFIHelperClass, "validate", "(Ljava/lang/Object;)Ljava/lang/Object;", 1);
for (int i = 0; i < CACHED_GLOBALREFS_TABLE_SIZE; i++) {
cachedGlobalRefs[i] = NULL;
diff --git a/com.oracle.truffle.r.nodes.builtin/src/com/oracle/truffle/r/nodes/builtin/base/AsVector.java b/com.oracle.truffle.r.nodes.builtin/src/com/oracle/truffle/r/nodes/builtin/base/AsVector.java
index fc335525efe7d395f444f2837b5f845fc7305297..1b79ed7583e633891e680452d84605ab8ce5aff7 100644
--- a/com.oracle.truffle.r.nodes.builtin/src/com/oracle/truffle/r/nodes/builtin/base/AsVector.java
+++ b/com.oracle.truffle.r.nodes.builtin/src/com/oracle/truffle/r/nodes/builtin/base/AsVector.java
@@ -123,7 +123,9 @@ public abstract class AsVector extends RBuiltinNode {
@Specialization(guards = "isSymbol(x, mode)")
protected RSymbol asVectorSymbol(RSymbol x, @SuppressWarnings("unused") String mode) {
controlVisibility();
- return RDataFactory.createSymbol(x.getName());
+ String sName = x.getName();
+ assert sName == sName.intern();
+ return RDataFactory.createSymbol(sName);
}
protected boolean isSymbol(@SuppressWarnings("unused") RSymbol x, String mode) {
diff --git a/com.oracle.truffle.r.nodes.builtin/src/com/oracle/truffle/r/nodes/builtin/base/FrameFunctions.java b/com.oracle.truffle.r.nodes.builtin/src/com/oracle/truffle/r/nodes/builtin/base/FrameFunctions.java
index ed3f6262547bfb7a588e88efee4699fce36e3d35..a563a19e6f0bf7609e7d644e7e65d312a985a154 100644
--- a/com.oracle.truffle.r.nodes.builtin/src/com/oracle/truffle/r/nodes/builtin/base/FrameFunctions.java
+++ b/com.oracle.truffle.r.nodes.builtin/src/com/oracle/truffle/r/nodes/builtin/base/FrameFunctions.java
@@ -26,6 +26,7 @@ import static com.oracle.truffle.r.runtime.RBuiltinKind.*;
import java.util.*;
+import com.oracle.truffle.api.CompilerAsserts;
import com.oracle.truffle.api.CompilerDirectives.TruffleBoundary;
import com.oracle.truffle.api.dsl.*;
import com.oracle.truffle.api.frame.*;
@@ -243,7 +244,9 @@ public class FrameFunctions {
if (n instanceof ConstantNode) {
listValue = ((ConstantNode) n).getValue();
} else if (n instanceof ReadVariableNode) {
- listValue = RDataFactory.createSymbol(((ReadVariableNode) n).getIdentifier());
+ String id = ((ReadVariableNode) n).getIdentifier();
+ assert id == id.intern();
+ listValue = RDataFactory.createSymbol(id);
} else if (n instanceof VarArgNode) {
listValue = createVarArgSymbol((VarArgNode) n);
} else {
@@ -251,7 +254,7 @@ public class FrameFunctions {
}
pl.setCar(listValue);
if (varArgSignature.getName(i2) != null) {
- pl.setTag(RDataFactory.createSymbol(varArgSignature.getName(i2)));
+ pl.setTag(RDataFactory.createSymbol(varArgSignature.getName(i2).intern()));
}
if (prev != null) {
prev.setCdr(pl);
@@ -308,7 +311,9 @@ public class FrameFunctions {
private static RSymbol createVarArgSymbol(VarArgNode varArgNode) {
int vn = varArgNode.getIndex() + 1;
- return RDataFactory.createSymbol((vn < 10 ? ".." : ".") + vn);
+ CompilerAsserts.neverPartOfCompilation(); // for string concatenation and interning
+ String varArgSymbol = (vn < 10 ? ".." : ".") + vn;
+ return RDataFactory.createSymbol(varArgSymbol.intern());
}
@Specialization
diff --git a/com.oracle.truffle.r.nodes.builtin/src/com/oracle/truffle/r/nodes/builtin/base/Slot.java b/com.oracle.truffle.r.nodes.builtin/src/com/oracle/truffle/r/nodes/builtin/base/Slot.java
index 09c47e6c6c743689d9294ae49acc8b60c5d2507d..aafa26a098fd362cd92683408b15e7482f824d15 100644
--- a/com.oracle.truffle.r.nodes.builtin/src/com/oracle/truffle/r/nodes/builtin/base/Slot.java
+++ b/com.oracle.truffle.r.nodes.builtin/src/com/oracle/truffle/r/nodes/builtin/base/Slot.java
@@ -58,7 +58,9 @@ public abstract class Slot extends RBuiltinNode {
@Specialization
protected Object getSlot(RAttributable object, Object nameObj) {
- return accessSlotNode.executeAccess(object, getName(nameObj));
+ String name = getName(nameObj);
+ assert name == name.intern();
+ return accessSlotNode.executeAccess(object, name);
}
}
diff --git a/com.oracle.truffle.r.nodes.builtin/src/com/oracle/truffle/r/nodes/builtin/base/foreign/ForeignFunctions.java b/com.oracle.truffle.r.nodes.builtin/src/com/oracle/truffle/r/nodes/builtin/base/foreign/ForeignFunctions.java
index 208e4cb7ff517cc0f366c38e288d1458afbe3ad1..021eb25bbf834a0d8109f4e18e56bf79863abbf3 100644
--- a/com.oracle.truffle.r.nodes.builtin/src/com/oracle/truffle/r/nodes/builtin/base/foreign/ForeignFunctions.java
+++ b/com.oracle.truffle.r.nodes.builtin/src/com/oracle/truffle/r/nodes/builtin/base/foreign/ForeignFunctions.java
@@ -84,7 +84,7 @@ public class ForeignFunctions {
Object list = RNull.instance;
for (int i = args.getLength() - 1; i >= 0; i--) {
String name = args.getSignature().getName(i);
- list = RDataFactory.createPairList(args.getArgument(i), list, name == null ? RNull.instance : RDataFactory.createSymbol(name));
+ list = RDataFactory.createPairList(args.getArgument(i), list, name == null ? RNull.instance : RDataFactory.createSymbol(name.intern()));
}
list = RDataFactory.createPairList(symbolName, list);
return list;
diff --git a/com.oracle.truffle.r.nodes/src/com/oracle/truffle/r/nodes/RASTUtils.java b/com.oracle.truffle.r.nodes/src/com/oracle/truffle/r/nodes/RASTUtils.java
index 5cf1c1e3459d9bccc80797c179a7c49995770a05..43a00cc2b87fb8e6f1d233b895e763a8aa037196 100644
--- a/com.oracle.truffle.r.nodes/src/com/oracle/truffle/r/nodes/RASTUtils.java
+++ b/com.oracle.truffle.r.nodes/src/com/oracle/truffle/r/nodes/RASTUtils.java
@@ -22,6 +22,7 @@
*/
package com.oracle.truffle.r.nodes;
+import com.oracle.truffle.api.CompilerAsserts;
import com.oracle.truffle.api.CompilerDirectives.TruffleBoundary;
import com.oracle.truffle.api.frame.*;
import com.oracle.truffle.api.instrument.WrapperNode;
@@ -114,9 +115,11 @@ public class RASTUtils {
public static RSymbol createRSymbol(Node readVariableNode) {
if (readVariableNode instanceof ReadVariadicComponentNode) {
ReadVariadicComponentNode rvcn = (ReadVariadicComponentNode) readVariableNode;
- return RDataFactory.createSymbol(rvcn.getPrintForm());
+ return RDataFactory.createSymbol(rvcn.getPrintForm().intern());
} else {
- return RDataFactory.createSymbol(((ReadVariableNode) readVariableNode).getIdentifier());
+ String id = ((ReadVariableNode) readVariableNode).getIdentifier();
+ assert id == id.intern();
+ return RDataFactory.createSymbol(id);
}
}
@@ -229,25 +232,27 @@ public class RASTUtils {
* or {@link GroupDispatchNode}.
*/
public static Object findFunctionName(Node node) {
+ CompilerAsserts.neverPartOfCompilation(); // for string interning
RNode child = (RNode) unwrap(getFunctionNode(node));
if (child instanceof ConstantNode && ConstantNode.isFunction(child)) {
return ((ConstantNode) child).getValue();
} else if (child instanceof ReadVariableNode) {
String name = ((ReadVariableNode) child).getIdentifier();
+ assert name == name.intern();
return RDataFactory.createSymbol(name);
} else if (child instanceof GroupDispatchNode) {
GroupDispatchNode groupDispatchNode = (GroupDispatchNode) child;
String gname = groupDispatchNode.getGenericName();
- return RDataFactory.createSymbol(gname);
+ return RDataFactory.createSymbol(gname.intern());
} else if (child instanceof RBuiltinNode) {
RBuiltinNode builtinNode = (RBuiltinNode) child;
- return RDataFactory.createSymbol((builtinNode.getBuiltin().getName()));
+ return RDataFactory.createSymbol((builtinNode.getBuiltin().getName().intern()));
} else {
// TODO This should really fail in some way as (clearly) this is not a "name"
// some more complicated expression, just deparse it
RDeparse.State state = RDeparse.State.createPrintableState();
child.deparse(state);
- return RDataFactory.createSymbol(state.toString());
+ return RDataFactory.createSymbol(state.toString().intern());
}
}
diff --git a/com.oracle.truffle.r.nodes/src/com/oracle/truffle/r/nodes/access/AccessSlotNode.java b/com.oracle.truffle.r.nodes/src/com/oracle/truffle/r/nodes/access/AccessSlotNode.java
index f709f8d3b7c68d59053aa9eb20d6223f16e2bfb2..2b23220db527a0367d76643c28a48f103e5dd4eb 100644
--- a/com.oracle.truffle.r.nodes/src/com/oracle/truffle/r/nodes/access/AccessSlotNode.java
+++ b/com.oracle.truffle.r.nodes/src/com/oracle/truffle/r/nodes/access/AccessSlotNode.java
@@ -41,7 +41,6 @@ public abstract class AccessSlotNode extends RNode {
@Child private ClassHierarchyNode classHierarchy;
@Child private TypeofNode typeofNode;
private final BranchProfile noSlot = BranchProfile.create();
- private final ConditionProfile nullSlot = ConditionProfile.createBinaryProfile();
protected AttributeAccess createAttrAccess(String name) {
return AttributeAccessNodeGen.create(name);
@@ -50,11 +49,8 @@ public abstract class AccessSlotNode extends RNode {
private Object getSlotS4Internal(RAttributable object, String name, Object value) {
if (value == null) {
noSlot.enter();
+ assert name == name.intern();
if (name == RRuntime.DOT_S3_CLASS) {
- // TODO: this will not work if `@` function is called directly, as in:
- // `@`(x, ".S3Class")
- // in general, treatment of the name parameter has to be finessed to be
- // fully compatible with GNU R on direct calls to `@` function
if (classHierarchy == null) {
CompilerDirectives.transferToInterpreterAndInvalidate();
classHierarchy = insert(ClassHierarchyNodeGen.create(true));
@@ -128,7 +124,7 @@ public abstract class AccessSlotNode extends RNode {
}
protected boolean isDotData(String name) {
- // see comment on usinq object equality in getSlotS4()
+ assert name == name.intern();
return name == RRuntime.DOT_DATA;
}
}
diff --git a/com.oracle.truffle.r.nodes/src/com/oracle/truffle/r/nodes/access/UpdateSlotNode.java b/com.oracle.truffle.r.nodes/src/com/oracle/truffle/r/nodes/access/UpdateSlotNode.java
index 50d816413538f2139a7b136451049fd66b457c1d..bdda2e770a6bacca85405ef7e002876f43802df5 100644
--- a/com.oracle.truffle.r.nodes/src/com/oracle/truffle/r/nodes/access/UpdateSlotNode.java
+++ b/com.oracle.truffle.r.nodes/src/com/oracle/truffle/r/nodes/access/UpdateSlotNode.java
@@ -17,7 +17,6 @@ import com.oracle.truffle.api.dsl.*;
import com.oracle.truffle.r.nodes.attributes.PutAttributeNode;
import com.oracle.truffle.r.nodes.attributes.PutAttributeNodeGen;
import com.oracle.truffle.r.nodes.function.ClassHierarchyNode;
-import com.oracle.truffle.r.runtime.*;
import com.oracle.truffle.r.runtime.data.*;
import com.oracle.truffle.r.runtime.data.model.*;
import com.oracle.truffle.r.runtime.nodes.*;
@@ -44,7 +43,8 @@ public abstract class UpdateSlotNode extends RNode {
@Specialization(contains = "updateSlotS4Cached")
protected Object updateSlotS4(RS4Object object, String name, Object value) {
- object.setAttr(name.intern(), value);
+ assert name == name.intern();
+ object.setAttr(name, value);
return object;
}
@@ -57,7 +57,8 @@ public abstract class UpdateSlotNode extends RNode {
@Specialization(contains = "updateSlotCached")
protected Object updateSlot(RAbstractContainer object, String name, Object value) {
- object.setAttr(name.intern(), value);
+ assert name == name.intern();
+ object.setAttr(name, value);
return object;
}
diff --git a/com.oracle.truffle.r.nodes/src/com/oracle/truffle/r/nodes/access/WriteVariableNodeSyntaxHelper.java b/com.oracle.truffle.r.nodes/src/com/oracle/truffle/r/nodes/access/WriteVariableNodeSyntaxHelper.java
index 96ed55de7dc36180733addf2d67b9b9d2215fdbd..2809aeba1ccda4460330e042ef2641e7b7cb7b19 100644
--- a/com.oracle.truffle.r.nodes/src/com/oracle/truffle/r/nodes/access/WriteVariableNodeSyntaxHelper.java
+++ b/com.oracle.truffle.r.nodes/src/com/oracle/truffle/r/nodes/access/WriteVariableNodeSyntaxHelper.java
@@ -22,6 +22,7 @@
*/
package com.oracle.truffle.r.nodes.access;
+import com.oracle.truffle.api.CompilerAsserts;
import com.oracle.truffle.r.nodes.RASTUtils;
import com.oracle.truffle.r.runtime.*;
import com.oracle.truffle.r.runtime.data.RDataFactory;
@@ -56,9 +57,11 @@ abstract class WriteVariableNodeSyntaxHelper extends WriteVariableNode {
protected Object getRelementHelper(String op, int index) {
switch (index) {
case 0:
+ assert op == op.intern();
return RDataFactory.createSymbol(op);
case 1:
- return RDataFactory.createSymbol(getName().toString());
+ CompilerAsserts.neverPartOfCompilation();
+ return RDataFactory.createSymbol(getName().toString().intern());
case 2:
return RASTUtils.createLanguageElement(getRhs());
default:
diff --git a/com.oracle.truffle.r.nodes/src/com/oracle/truffle/r/nodes/access/variables/ReadVariableNode.java b/com.oracle.truffle.r.nodes/src/com/oracle/truffle/r/nodes/access/variables/ReadVariableNode.java
index 673ac2dd79b4c606c29f5cc9968091e5c8288a12..329e4ca35f873c2502fcbdc5cf2a46f99d170356 100644
--- a/com.oracle.truffle.r.nodes/src/com/oracle/truffle/r/nodes/access/variables/ReadVariableNode.java
+++ b/com.oracle.truffle.r.nodes/src/com/oracle/truffle/r/nodes/access/variables/ReadVariableNode.java
@@ -137,7 +137,7 @@ public final class ReadVariableNode extends RNode implements RSyntaxNode, Visibi
private ReadVariableNode(Object identifier, RType mode, ReadKind kind, boolean visibilityChange) {
this.identifier = identifier;
- this.identifierAsString = identifier.toString();
+ this.identifierAsString = identifier.toString().intern();
this.mode = mode;
this.kind = kind;
this.visibilityChange = visibilityChange;
@@ -180,7 +180,9 @@ public final class ReadVariableNode extends RNode implements RSyntaxNode, Visibi
@Override
public Object getRelementImpl(int index) {
- return RDataFactory.createSymbol(identifier.toString());
+ String id = identifier.toString();
+ assert id == id.intern();
+ return RDataFactory.createSymbol(id);
}
@Override
diff --git a/com.oracle.truffle.r.nodes/src/com/oracle/truffle/r/nodes/unary/CastSymbolNode.java b/com.oracle.truffle.r.nodes/src/com/oracle/truffle/r/nodes/unary/CastSymbolNode.java
index 4b00e38b6a61d58c31c14af94fbc1f0f8f69b45c..e90f8a8de94b5ee0a1947dea6bc061c72395177f 100644
--- a/com.oracle.truffle.r.nodes/src/com/oracle/truffle/r/nodes/unary/CastSymbolNode.java
+++ b/com.oracle.truffle.r.nodes/src/com/oracle/truffle/r/nodes/unary/CastSymbolNode.java
@@ -57,9 +57,11 @@ public abstract class CastSymbolNode extends CastBaseNode {
return backQuote(toString(value));
}
+ @TruffleBoundary
@Specialization
protected RSymbol doString(String value) {
- return RDataFactory.createSymbol(value);
+ // TODO: see if this is going to hit us performance-wise
+ return RDataFactory.createSymbol(value.intern());
}
@Specialization
@@ -85,7 +87,8 @@ public abstract class CastSymbolNode extends CastBaseNode {
@TruffleBoundary
private static RSymbol backQuote(String s) {
- return RDataFactory.createSymbol("`" + s + "`");
+ String quotedString = "`" + s + "`";
+ return RDataFactory.createSymbol(quotedString.intern());
}
public static CastSymbolNode createNonPreserving() {
diff --git a/com.oracle.truffle.r.parser/src/com/oracle/truffle/r/parser/ast/Constant.java b/com.oracle.truffle.r.parser/src/com/oracle/truffle/r/parser/ast/Constant.java
index 40f40c1a8815808e9061d7fe1e0e485c86ca0f4f..6177da34e174b3d6f8bff56e9519d6190ca73e60 100644
--- a/com.oracle.truffle.r.parser/src/com/oracle/truffle/r/parser/ast/Constant.java
+++ b/com.oracle.truffle.r.parser/src/com/oracle/truffle/r/parser/ast/Constant.java
@@ -30,8 +30,23 @@ public final class Constant extends ASTNode {
private final String[] values;
private final ConstantType type;
+ /*
+ * Used in case parameter is a single String value that should not be interned (e.g., NA)
+ */
+ private Constant(String value, SourceSection source) {
+ super(source);
+ this.values = new String[]{value};
+ this.type = ConstantType.STRING;
+ }
+
private Constant(String[] values, ConstantType type, SourceSection source) {
super(source);
+ if (type == ConstantType.STRING) {
+ assert values != null;
+ for (int i = 0; i < values.length; i++) {
+ values[i] = values[i].intern();
+ }
+ }
this.values = values;
this.type = type;
}
@@ -95,7 +110,8 @@ public final class Constant extends ASTNode {
}
public static Constant createStringNA(SourceSection src) {
- return new Constant(new String[]{RRuntime.STRING_NA}, ConstantType.STRING, src);
+ // don't intern NA value, otherwise each "NA" literal becomes an NA value
+ return new Constant(RRuntime.STRING_NA, src);
}
public void addNegativeSign() {
diff --git a/com.oracle.truffle.r.parser/src/com/oracle/truffle/r/parser/ast/FieldAccess.java b/com.oracle.truffle.r.parser/src/com/oracle/truffle/r/parser/ast/FieldAccess.java
index 18b51191d2557a408eccda11e859fd837105e659..6dd48e261a87f09e92e482b9190989176a10b006 100644
--- a/com.oracle.truffle.r.parser/src/com/oracle/truffle/r/parser/ast/FieldAccess.java
+++ b/com.oracle.truffle.r.parser/src/com/oracle/truffle/r/parser/ast/FieldAccess.java
@@ -45,10 +45,7 @@ public final class FieldAccess extends ASTNode {
public static ASTNode create(SourceSection src, FieldOperator op, ASTNode value, String fieldName) {
switch (op) {
case AT:
- // these two names have special meaning for slot retrieval
-
- String newName = fieldName.equals(RRuntime.DOT_DATA) ? RRuntime.DOT_DATA : (fieldName.equals(RRuntime.DOT_S3_CLASS) ? RRuntime.DOT_S3_CLASS : fieldName);
- return new FieldAccess(src, value, newName, true);
+ return new FieldAccess(src, value, fieldName.intern(), true);
case FIELD:
return new FieldAccess(src, value, fieldName, false);
}
diff --git a/com.oracle.truffle.r.runtime/src/com/oracle/truffle/r/runtime/RSerialize.java b/com.oracle.truffle.r.runtime/src/com/oracle/truffle/r/runtime/RSerialize.java
index 0bba416246db4c985a33177d3dc6c08c9cf6d033..ce0aaeb9c42edb9b0ed314c7d44c35f0f67a89d6 100644
--- a/com.oracle.truffle.r.runtime/src/com/oracle/truffle/r/runtime/RSerialize.java
+++ b/com.oracle.truffle.r.runtime/src/com/oracle/truffle/r/runtime/RSerialize.java
@@ -15,6 +15,7 @@ import java.io.*;
import java.nio.charset.*;
import java.util.*;
+import com.oracle.truffle.api.CompilerAsserts;
import com.oracle.truffle.api.CompilerDirectives.TruffleBoundary;
import com.oracle.truffle.api.frame.*;
import com.oracle.truffle.api.source.*;
@@ -670,7 +671,7 @@ public class RSerialize {
case SYMSXP: {
String name = (String) readItem();
- result = RDataFactory.createSymbol(name);
+ result = RDataFactory.createSymbol(name.intern());
addReadRef(result);
break;
}
@@ -1823,7 +1824,8 @@ public class RSerialize {
RSymbol findSymbol(String name) {
RSymbol symbol = symbolMap.get(name);
if (symbol == null) {
- symbol = RDataFactory.createSymbol(name);
+ CompilerAsserts.neverPartOfCompilation(); // for interning
+ symbol = RDataFactory.createSymbol(name.intern());
symbolMap.put(name, symbol);
}
return symbol;
diff --git a/com.oracle.truffle.r.runtime/src/com/oracle/truffle/r/runtime/data/RDataFactory.java b/com.oracle.truffle.r.runtime/src/com/oracle/truffle/r/runtime/data/RDataFactory.java
index 6acc3e48d498ad8afabf89b7cbabda69667ddb4d..56016b5b14cd1b02134448f33f0d6429a370be2c 100644
--- a/com.oracle.truffle.r.runtime/src/com/oracle/truffle/r/runtime/data/RDataFactory.java
+++ b/com.oracle.truffle.r.runtime/src/com/oracle/truffle/r/runtime/data/RDataFactory.java
@@ -366,9 +366,17 @@ public final class RDataFactory {
}
public static RSymbol createSymbol(String name) {
+ assert name == name.intern();
return traceDataCreated(new RSymbol(name));
}
+ /*
+ * A version of {@link createSymbol} method used from native code.
+ */
+ public static RSymbol createSymbolInterned(String name) {
+ return createSymbol(name.intern());
+ }
+
public static RLanguage createLanguage(RNode rep) {
return traceDataCreated(new RLanguage(rep));
}
diff --git a/com.oracle.truffle.r.runtime/src/com/oracle/truffle/r/runtime/ffi/DLL.java b/com.oracle.truffle.r.runtime/src/com/oracle/truffle/r/runtime/ffi/DLL.java
index 469e9f1c81743281b5f8e24d88eed0a7ff51c733..3fc09939fc4ef6d3f330dd977c41acd5a4c12762 100644
--- a/com.oracle.truffle.r.runtime/src/com/oracle/truffle/r/runtime/ffi/DLL.java
+++ b/com.oracle.truffle.r.runtime/src/com/oracle/truffle/r/runtime/ffi/DLL.java
@@ -16,6 +16,7 @@ import java.util.*;
import java.util.concurrent.*;
import java.util.concurrent.atomic.*;
+import com.oracle.truffle.api.CompilerAsserts;
import com.oracle.truffle.r.runtime.*;
import com.oracle.truffle.r.runtime.RError.RErrorException;
import com.oracle.truffle.r.runtime.context.*;
@@ -205,7 +206,8 @@ public class DLL {
}
public static RExternalPtr createExternalPtr(long value, RStringVector rClass) {
- RExternalPtr result = RDataFactory.createExternalPtr(value, RDataFactory.createSymbol(rClass.getDataAt(0)));
+ CompilerAsserts.neverPartOfCompilation(); // for interning
+ RExternalPtr result = RDataFactory.createExternalPtr(value, RDataFactory.createSymbol(rClass.getDataAt(0).intern()));
result.setClassAttr(rClass, false);
return result;
}
diff --git a/com.oracle.truffle.r.test/src/com/oracle/truffle/r/test/S4/TestS4.java b/com.oracle.truffle.r.test/src/com/oracle/truffle/r/test/S4/TestS4.java
index 46e7b99886ea1873f8af7313995f6da09a56bd13..72532269a0ad6d8c74a90dee7fe06bc28905f495 100644
--- a/com.oracle.truffle.r.test/src/com/oracle/truffle/r/test/S4/TestS4.java
+++ b/com.oracle.truffle.r.test/src/com/oracle/truffle/r/test/S4/TestS4.java
@@ -38,6 +38,8 @@ public class TestS4 extends TestBase {
assertEval("{ getClass(\"ClassUnionRepresentation\")@virtual }");
assertEval("{ getClass(\"ClassUnionRepresentation\")@.S3Class }");
assertEval("{ c(42)@.Data }");
+ assertEval("{ x<-42; `@`(x, \".Data\") }");
+ assertEval("{ x<-42; `@`(x, .Data) }");
assertEval(Output.ContainsError, "{ getClass(\"ClassUnionRepresentation\")@foo }");
assertEval(Output.ContainsError, "{ c(42)@foo }");
assertEval(Output.ContainsError, "{ x<-c(42); class(x)<-\"bar\"; x@foo }");