Support running on JDK 17 (#1281)

With this change, WALA's regression tests pass on JDK 17, and WALA can also load and process some JDK 17 bytecodes. We have _not_ thoroughly tested recent bytecode features and they may still not work, but whatever is exercised by current regression tests seems to be working. Getting things working on JDK 17 required various minor changes.
wala · Jun 27, 2023 · c6f20aa · c6f20aa
1 parent 6f9e6ce
commit c6f20aa
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Showing 12 changed files with 73 additions and 48 deletions.
diff --git a/.github/workflows/continuous-integration.yml b/.github/workflows/continuous-integration.yml
@@ -19,6 +19,8 @@ jobs:
             java: 11
           - os: windows-latest
             java: 11
+          - os: ubuntu-latest
+            java: 17
       fail-fast: false
     runs-on: ${{ matrix.os }}
     steps:

diff --git a/build-logic/src/main/kotlin/com/ibm/wala/gradle/java.gradle.kts b/build-logic/src/main/kotlin/com/ibm/wala/gradle/java.gradle.kts
@@ -43,9 +43,9 @@ dependencies {
   "javadocSource"(sourceSets.main.get().allJava)
 }
 
-the<JavaPluginExtension>().toolchain.languageVersion.set(JavaLanguageVersion.of(11))
-
 tasks.withType<JavaCompile>().configureEach {
+  // Generate JDK 11 bytecodes; that is the minimum version supported by WALA
+  options.release.set(11)
   options.errorprone {
     // don't run warning-level checks by default as they add too much noise to build output
     // NOTE: until https://github.com/google/error-prone/pull/3462 makes it to a release,

diff --git a/cast/java/src/testFixtures/java/com/ibm/wala/cast/java/test/JavaIRTests.java b/cast/java/src/testFixtures/java/com/ibm/wala/cast/java/test/JavaIRTests.java
@@ -722,7 +722,7 @@ public void testMiniaturSliceBug() throws IllegalArgumentException, CancelExcept
         AstJavaSlicer.computeAssertionSlice(cg, pa, roots, false);
     Collection<Statement> slice = y.fst;
     dumpSlice(slice);
-    Assert.assertEquals(0, SlicerUtil.countAllocations(slice));
+    Assert.assertEquals(0, SlicerUtil.countAllocations(slice, false));
     Assert.assertEquals(1, SlicerUtil.countPutfields(slice));
 
     // test slice from main
@@ -731,7 +731,7 @@ public void testMiniaturSliceBug() throws IllegalArgumentException, CancelExcept
     y = AstJavaSlicer.computeAssertionSlice(cg, pa, roots, false);
     slice = y.fst;
     // SlicerUtil.dumpSlice(slice);
-    Assert.assertEquals(2, SlicerUtil.countAllocations(slice));
+    Assert.assertEquals(2, SlicerUtil.countAllocations(slice, false));
     Assert.assertEquals(2, SlicerUtil.countPutfields(slice));
   }
 

diff --git a/cast/java/test/data/build.gradle.kts b/cast/java/test/data/build.gradle.kts
@@ -59,3 +59,9 @@ sourceSets.test.get().java.srcDir(downloadJLex.map { it.extra["downloadedSourceD
 //
 
 tasks.register("prepareMavenBuild") { dependsOn("eclipseClasspath", "eclipseProject") }
+
+// On JDK 17, deprecation errors in ECJ cannot be disabled when compiling JLex code.  So, we disable
+// the ECJ task on JDK 17+.
+if (JavaVersion.current() >= JavaVersion.VERSION_17) {
+  tasks.named("compileTestJavaUsingEcj") { enabled = false }
+}
diff --git a/core/build.gradle.kts b/core/build.gradle.kts
@@ -347,7 +347,7 @@ tasks.named<Copy>("processTestResources") {
 }
 
 tasks.named<Test>("test") {
-  maxHeapSize = "1500M"
+  maxHeapSize = "2000M"
   systemProperty("com.ibm.wala.junit.profile", "short")
   classpath += files(sourceSets.test.get().output.classesDirs)
   testLogging {

diff --git a/core/src/main/java/com/ibm/wala/analysis/exceptionanalysis/ExceptionAnalysis.java b/core/src/main/java/com/ibm/wala/analysis/exceptionanalysis/ExceptionAnalysis.java
@@ -13,6 +13,7 @@
 import com.ibm.wala.analysis.arraybounds.ArrayOutOfBoundsAnalysis;
 import com.ibm.wala.analysis.nullpointer.IntraproceduralNullPointerAnalysis;
 import com.ibm.wala.classLoader.CallSiteReference;
+import com.ibm.wala.classLoader.IClass;
 import com.ibm.wala.dataflow.graph.BitVectorFramework;
 import com.ibm.wala.dataflow.graph.BitVectorSolver;
 import com.ibm.wala.fixpoint.BitVectorVariable;
@@ -127,10 +128,18 @@ public boolean catchesException(
       boolean isCaught = false;
       while (caughtExceptions.hasNext() && !isCaught) {
         TypeReference caughtException = caughtExceptions.next();
+        IClass caughtExceptionClass = cha.lookupClass(caughtException);
+        if (caughtExceptionClass == null) {
+          // for now, assume it is not caught
+          continue;
+        }
         for (TypeReference thrownException : thrownExceptions) {
-          isCaught |=
-              cha.isAssignableFrom(
-                  cha.lookupClass(caughtException), cha.lookupClass(thrownException));
+          IClass thrownExceptionClass = cha.lookupClass(thrownException);
+          if (thrownExceptionClass == null) {
+            // for now, assume it is not caught
+            continue;
+          }
+          isCaught |= cha.isAssignableFrom(caughtExceptionClass, thrownExceptionClass);
           if (isCaught) break;
         }
       }

diff --git a/core/src/main/java/com/ibm/wala/analysis/reflection/java7/MethodHandles.java b/core/src/main/java/com/ibm/wala/analysis/reflection/java7/MethodHandles.java
@@ -48,6 +48,7 @@
 import com.ibm.wala.util.collections.FilterIterator;
 import com.ibm.wala.util.collections.HashMapFactory;
 import com.ibm.wala.util.collections.MapIterator;
+import com.ibm.wala.util.debug.UnimplementedError;
 import com.ibm.wala.util.intset.IntSet;
 import com.ibm.wala.util.intset.IntSetUtil;
 import com.ibm.wala.util.intset.MutableIntSet;
@@ -301,7 +302,17 @@ public IMethod getCalleeTarget(CGNode caller, CallSiteReference site, IClass rec
                       .getClassHierarchy()
                       .lookupClass(TypeReference.JavaLangInvokeMethodHandle),
                   false,
-                  false);
+                  false) {
+                @Override
+                public IR makeIR(Context context, SSAOptions options) throws UnimplementedError {
+                  // MS: On JDK 17, sometimes makeIR() is getting called, and the default
+                  // implementation fails with an error.  I don't fully understand the invariants of
+                  // this class, but overriding and returning null makes the tests pass.
+                  // Eventually, we should document this class and figure out if this is the right
+                  // fix.
+                  return null;
+                }
+              };
           impls.put(target, invokeExactTrampoline);
         }
 

diff --git a/core/src/main/java/com/ibm/wala/classLoader/SyntheticMethod.java b/core/src/main/java/com/ibm/wala/classLoader/SyntheticMethod.java
@@ -269,7 +269,8 @@ public SSAInstruction[] getStatements(@SuppressWarnings("unused") SSAOptions opt
    * @param options options governing IR conversion
    */
   public IR makeIR(Context context, SSAOptions options) throws UnimplementedError {
-    throw new UnimplementedError("haven't implemented IR yet for class " + getClass());
+    throw new UnimplementedError(
+        "haven't implemented IR yet for class " + getClass() + ", method " + method);
   }
 
   @Override

diff --git a/core/src/main/java/com/ibm/wala/ipa/slicer/SlicerUtil.java b/core/src/main/java/com/ibm/wala/ipa/slicer/SlicerUtil.java
@@ -93,28 +93,13 @@ public static void dumpSliceToFile(Collection<Statement> slice, String fileName)
     }
   }
 
-  public static int countAllocations(Collection<Statement> slice) {
+  public static int countAllocations(Collection<Statement> slice, boolean applicationOnly) {
     int count = 0;
     for (Statement s : slice) {
       if (s.getKind().equals(Statement.Kind.NORMAL)) {
         NormalStatement ns = (NormalStatement) s;
         if (ns.getInstruction() instanceof SSANewInstruction) {
-          count++;
-        }
-      }
-    }
-    return count;
-  }
-
-  public static int countApplicationAllocations(Collection<Statement> slice) {
-    int count = 0;
-    for (Statement s : slice) {
-      if (s.getKind().equals(Statement.Kind.NORMAL)) {
-        NormalStatement ns = (NormalStatement) s;
-        if (ns.getInstruction() instanceof SSANewInstruction) {
-          AnalysisScope scope = s.getNode().getClassHierarchy().getScope();
-          if (scope.isApplicationLoader(
-              s.getNode().getMethod().getDeclaringClass().getClassLoader())) {
+          if (!applicationOnly || fromApplicationLoader(s)) {
             count++;
           }
         }
@@ -123,13 +108,22 @@ public static int countApplicationAllocations(Collection<Statement> slice) {
     return count;
   }
 
-  public static int countThrows(Collection<Statement> slice) {
+  private static boolean fromApplicationLoader(Statement s) {
+    return s.getNode()
+        .getClassHierarchy()
+        .getScope()
+        .isApplicationLoader(s.getNode().getMethod().getDeclaringClass().getClassLoader());
+  }
+
+  public static int countThrows(Collection<Statement> slice, boolean applicationOnly) {
     int count = 0;
     for (Statement s : slice) {
       if (s.getKind().equals(Statement.Kind.NORMAL)) {
         NormalStatement ns = (NormalStatement) s;
         if (ns.getInstruction() instanceof SSAAbstractThrowInstruction) {
-          count++;
+          if (!applicationOnly || fromApplicationLoader(s)) {
+            count++;
+          }
         }
       }
     }
@@ -228,15 +222,17 @@ public static int countReturns(Collection<Statement> slice) {
     return count;
   }
 
-  public static int countGetfields(Collection<Statement> slice) {
+  public static int countGetfields(Collection<Statement> slice, boolean applicationOnly) {
     int count = 0;
     for (Statement s : slice) {
       if (s.getKind().equals(Statement.Kind.NORMAL)) {
         NormalStatement ns = (NormalStatement) s;
         if (ns.getInstruction() instanceof SSAGetInstruction) {
           SSAGetInstruction p = (SSAGetInstruction) ns.getInstruction();
           if (!p.isStatic()) {
-            count++;
+            if (!applicationOnly || fromApplicationLoader(s)) {
+              count++;
+            }
           }
         }
       }

diff --git a/core/src/test/java/com/ibm/wala/core/tests/slicer/SlicerTest.java b/core/src/test/java/com/ibm/wala/core/tests/slicer/SlicerTest.java
@@ -209,7 +209,7 @@ public void testSlice3()
         Slicer.computeBackwardSlice(
             s, cg, pointerAnalysis, DataDependenceOptions.FULL, ControlDependenceOptions.NONE);
     SlicerUtil.dumpSlice(slice);
-    Assert.assertEquals(slice.toString(), 1, SlicerUtil.countAllocations(slice));
+    Assert.assertEquals(slice.toString(), 1, SlicerUtil.countAllocations(slice, false));
   }
 
   @Test
@@ -598,7 +598,7 @@ public void testTestId()
         Slicer.computeBackwardSlice(
             s, cg, pointerAnalysis, DataDependenceOptions.FULL, ControlDependenceOptions.NONE);
     SlicerUtil.dumpSlice(slice);
-    Assert.assertEquals(slice.toString(), 1, SlicerUtil.countAllocations(slice));
+    Assert.assertEquals(slice.toString(), 1, SlicerUtil.countAllocations(slice, false));
   }
 
   @Test
@@ -626,7 +626,7 @@ public void testTestArrays()
         Slicer.computeBackwardSlice(
             s, cg, pointerAnalysis, DataDependenceOptions.FULL, ControlDependenceOptions.NONE);
     SlicerUtil.dumpSlice(slice);
-    Assert.assertEquals(slice.toString(), 2, SlicerUtil.countAllocations(slice));
+    Assert.assertEquals(slice.toString(), 2, SlicerUtil.countAllocations(slice, false));
     Assert.assertEquals(slice.toString(), 1, SlicerUtil.countAloads(slice));
   }
 
@@ -655,7 +655,7 @@ public void testTestFields()
         Slicer.computeBackwardSlice(
             s, cg, pointerAnalysis, DataDependenceOptions.FULL, ControlDependenceOptions.NONE);
     SlicerUtil.dumpSlice(slice);
-    Assert.assertEquals(slice.toString(), 2, SlicerUtil.countAllocations(slice));
+    Assert.assertEquals(slice.toString(), 2, SlicerUtil.countAllocations(slice, false));
     Assert.assertEquals(slice.toString(), 1, SlicerUtil.countPutfields(slice));
   }
 
@@ -686,7 +686,7 @@ public void testThin1()
         Slicer.computeBackwardSlice(
             s, cg, pointerAnalysis, DataDependenceOptions.FULL, ControlDependenceOptions.NONE);
     SlicerUtil.dumpSlice(slice);
-    Assert.assertEquals(3, SlicerUtil.countAllocations(slice));
+    Assert.assertEquals(3, SlicerUtil.countAllocations(slice, false));
     Assert.assertEquals(2, SlicerUtil.countPutfields(slice));
 
     // compute thin slice .. ignore base pointers
@@ -699,7 +699,7 @@ public void testThin1()
             ControlDependenceOptions.NONE);
     slice = computeBackwardSlice;
     SlicerUtil.dumpSlice(slice);
-    Assert.assertEquals(slice.toString(), 2, SlicerUtil.countAllocations(slice));
+    Assert.assertEquals(slice.toString(), 2, SlicerUtil.countAllocations(slice, false));
     Assert.assertEquals(slice.toString(), 1, SlicerUtil.countPutfields(slice));
   }
 
@@ -728,7 +728,7 @@ public void testTestGlobal()
         Slicer.computeBackwardSlice(
             s, cg, pointerAnalysis, DataDependenceOptions.FULL, ControlDependenceOptions.NONE);
     SlicerUtil.dumpSlice(slice);
-    Assert.assertEquals(slice.toString(), 1, SlicerUtil.countAllocations(slice));
+    Assert.assertEquals(slice.toString(), 1, SlicerUtil.countAllocations(slice, false));
     Assert.assertEquals(slice.toString(), 2, SlicerUtil.countPutstatics(slice));
     Assert.assertEquals(slice.toString(), 2, SlicerUtil.countGetstatics(slice));
   }
@@ -758,7 +758,7 @@ public void testTestMultiTarget()
         Slicer.computeBackwardSlice(
             s, cg, pointerAnalysis, DataDependenceOptions.FULL, ControlDependenceOptions.NONE);
     SlicerUtil.dumpSlice(slice);
-    Assert.assertEquals(slice.toString(), 2, SlicerUtil.countAllocations(slice));
+    Assert.assertEquals(slice.toString(), 2, SlicerUtil.countAllocations(slice, false));
   }
 
   @Test
@@ -787,7 +787,7 @@ public void testTestRecursion()
         Slicer.computeBackwardSlice(
             s, cg, pointerAnalysis, DataDependenceOptions.FULL, ControlDependenceOptions.NONE);
     SlicerUtil.dumpSlice(slice);
-    Assert.assertEquals(slice.toString(), 3, SlicerUtil.countAllocations(slice));
+    Assert.assertEquals(slice.toString(), 3, SlicerUtil.countAllocations(slice, false));
     Assert.assertEquals(slice.toString(), 2, SlicerUtil.countPutfields(slice));
   }
 
@@ -819,7 +819,7 @@ public void testPrimGetterSetter()
         Slicer.computeBackwardSlice(
             s, pcg, pointerAnalysis, DataDependenceOptions.FULL, ControlDependenceOptions.FULL);
     SlicerUtil.dumpSlice(slice);
-    Assert.assertEquals(slice.toString(), 0, SlicerUtil.countAllocations(slice));
+    Assert.assertEquals(slice.toString(), 0, SlicerUtil.countAllocations(slice, false));
     Assert.assertEquals(slice.toString(), 1, SlicerUtil.countPutfields(slice));
   }
 
@@ -878,7 +878,7 @@ public void testPrimGetterSetter2()
         Slicer.computeBackwardSlice(
             s, pcg, pointerAnalysis, DataDependenceOptions.FULL, ControlDependenceOptions.NONE);
     SlicerUtil.dumpSlice(slice);
-    Assert.assertEquals(slice.toString(), 1, SlicerUtil.countAllocations(slice));
+    Assert.assertEquals(slice.toString(), 1, SlicerUtil.countAllocations(slice, false));
     Assert.assertEquals(slice.toString(), 1, SlicerUtil.countPutfields(slice));
   }
 
@@ -906,10 +906,9 @@ public void testTestThrowCatch()
     Collection<Statement> slice =
         Slicer.computeBackwardSlice(
             s, cg, pointerAnalysis, DataDependenceOptions.FULL, ControlDependenceOptions.NONE);
-    SlicerUtil.dumpSlice(slice);
-    Assert.assertEquals(slice.toString(), 1, SlicerUtil.countApplicationAllocations(slice));
-    Assert.assertEquals(slice.toString(), 1, SlicerUtil.countThrows(slice));
-    Assert.assertEquals(slice.toString(), 1, SlicerUtil.countGetfields(slice));
+    Assert.assertEquals("wrong number of allocations", 1, SlicerUtil.countAllocations(slice, true));
+    Assert.assertEquals("wrong number of throws", 1, SlicerUtil.countThrows(slice, true));
+    Assert.assertEquals("wrong number of getfields", 1, SlicerUtil.countGetfields(slice, true));
   }
 
   @Test

diff --git a/shrike/src/main/java/com/ibm/wala/shrike/shrikeCT/ClassReader.java b/shrike/src/main/java/com/ibm/wala/shrike/shrikeCT/ClassReader.java
@@ -67,7 +67,8 @@ private void parse() throws InvalidClassFileException {
     if (magic != MAGIC) {
       throw new InvalidClassFileException(offset, "bad magic number: " + magic);
     }
-    if (majorVersion < 45 || majorVersion > 60) {
+    // Support class files up through JDK 17 (version 61)
+    if (majorVersion < 45 || majorVersion > 61) {
       throw new InvalidClassFileException(
           offset, "unknown class file version: " + majorVersion + '.' + minorVersion);
     }

diff --git a/util/.settings/org.eclipse.jdt.core.prefs b/util/.settings/org.eclipse.jdt.core.prefs
@@ -23,7 +23,7 @@ org.eclipse.jdt.core.compiler.problem.assertIdentifier=error
 org.eclipse.jdt.core.compiler.problem.autoboxing=ignore
 org.eclipse.jdt.core.compiler.problem.comparingIdentical=error
 org.eclipse.jdt.core.compiler.problem.deadCode=warning
-org.eclipse.jdt.core.compiler.problem.deprecation=error
+org.eclipse.jdt.core.compiler.problem.deprecation=disabled
 org.eclipse.jdt.core.compiler.problem.deprecationInDeprecatedCode=disabled
 org.eclipse.jdt.core.compiler.problem.deprecationWhenOverridingDeprecatedMethod=disabled
 org.eclipse.jdt.core.compiler.problem.discouragedReference=error