[DO NOT MERGE] Source compiler

decompiled-wabt/Reproducer.md

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+# JDK-8376400 reproducer
+
+This is a self contained reproducer for JDK-8376400.
+We keep the pom.wml for conveninece, but it can be reproduced with plain `javac`/`java` executions.
+
+To build: `./build.sh`
+To run: `./run.sh`
+
+On Java 18+, or on Java 17 after applying this commit: `f3eb5014aa75af4463308f52f2bc6e9fcd2da36c` the run command completes successfully.
+
+On Java <= 17 the run fails with this error(much down the line):
+
+```
+Exception in thread "main" com.dylibso.chicory.runtime.WasmRuntimeException: out of bounds memory access: attempted to access address: 668598272 but limit is: 668598272 and size: 8
+        at com.dylibso.chicory.runtime.ByteBufferMemory.outOfBoundsException(ByteBufferMemory.java:313)
+        at com.dylibso.chicory.runtime.ByteBufferMemory.writeLong(ByteBufferMemory.java:424)
+        at com.dylibso.chicory.wabt.Wat2WasmMachine.func_1890(Wat2WasmMachine.java)
+        at com.dylibso.chicory.wabt.Wat2WasmMachine.call_1890(Wat2WasmMachine.java)
+        at com.dylibso.chicory.wabt.Wat2WasmMachine.call(Wat2WasmMachine.java)
+        at com.dylibso.chicory.wabt.Wat2WasmMachine.func_231(Wat2WasmMachine.java:22513)
+        at com.dylibso.chicory.wabt.Wat2WasmMachine.call_231(Wat2WasmMachine.java:22523)
+        at com.dylibso.chicory.wabt.Wat2WasmMachine.call(Wat2WasmMachine.java)
+        at com.dylibso.chicory.wabt.Wat2WasmMachine.func_224(Wat2WasmMachine.java:22138)
+        at com.dylibso.chicory.wabt.Wat2WasmMachine.call_224(Wat2WasmMachine.java:22152)
+        at com.dylibso.chicory.wabt.Wat2WasmMachine.call(Wat2WasmMachine.java)
+        at com.dylibso.chicory.wabt.Wat2WasmMachine.func_41(Wat2WasmMachine.java:2699)
+        at com.dylibso.chicory.wabt.Wat2WasmMachine.call_41(Wat2WasmMachine.java:3555)
+        at com.dylibso.chicory.wabt.Wat2WasmMachine.call(Wat2WasmMachine.java)
+        at com.dylibso.chicory.wabt.Wat2WasmMachine.func_40(Wat2WasmMachine.java:2488)
+        at com.dylibso.chicory.wabt.Wat2WasmMachine.call_40(Wat2WasmMachine.java:2679)
+        at com.dylibso.chicory.wabt.Wat2WasmMachine.call(Wat2WasmMachine.java)
+        at com.dylibso.chicory.wabt.Wat2WasmMachine.func_21(Wat2WasmMachine.java:678)
+        at com.dylibso.chicory.wabt.Wat2WasmMachine.call_21(Wat2WasmMachine.java:998)
+        at com.dylibso.chicory.wabt.Wat2WasmMachine.call(Wat2WasmMachine.java)
+        at com.dylibso.chicory.wabt.Wat2WasmMachine.func_33(Wat2WasmMachine.java:1758)
+        at com.dylibso.chicory.wabt.Wat2WasmMachine.call_33(Wat2WasmMachine.java:1765)
+        at com.dylibso.chicory.wabt.Wat2WasmMachine.call(Wat2WasmMachine.java)
+        at com.dylibso.chicory.wabt.Wat2WasmMachine.func_1791(Wat2WasmMachine.java)
+        at com.dylibso.chicory.wabt.Wat2WasmMachine.call_1791(Wat2WasmMachine.java)
+        at com.dylibso.chicory.wabt.Wat2WasmMachine.call(Wat2WasmMachine.java)
+        at com.dylibso.chicory.wabt.Wat2WasmMachine.func_18(Wat2WasmMachine.java:191)
+        at com.dylibso.chicory.wabt.Wat2WasmMachine.call_18(Wat2WasmMachine.java:208)
+        at com.dylibso.chicory.wabt.Wat2WasmMachine.call(Wat2WasmMachine.java)
+        at com.dylibso.chicory.runtime.Instance$Exports.lambda$function$0(Instance.java:219)
+        at com.dylibso.chicory.runtime.Instance.initialize(Instance.java:184)
+        at com.dylibso.chicory.runtime.Instance.<init>(Instance.java:118)
+        at com.dylibso.chicory.runtime.Instance$Builder.build(Instance.java:884)
+        at com.dylibso.chicory.wabt.Wat2Wasm.parse(Wat2Wasm.java:65)
+        at com.dylibso.chicory.wabt.Wat2Wasm.parse(Wat2Wasm.java:41)
+        at com.dylibso.chicory.wabt.Main.main(Main.java:8)
+```

decompiled-wabt/build.sh

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+#!/bin/bash
+set -e
+
+DIR="$(cd "$(dirname "$0")" && pwd)"
+OUT="$DIR/target/classes"
+
+rm -rf "$OUT"
+mkdir -p "$OUT"
+
+javac \
+  -d "$OUT" \
+  $(find "$DIR/src/main/java" -name '*.java')
+
+cp -r "$DIR/src/main/resources/"* "$OUT/"
+
+echo "Build complete: $OUT"

decompiled-wabt/pom.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+  <groupId>com.dylibso.chicory</groupId>
+
+  <artifactId>wabt</artifactId>
+  <version>999-SNAPSHOT</version>
+  <packaging>jar</packaging>
+
+  <name>Chicory - wabt</name>
+  <description>wabt tools compiled to pure Java with Chicory</description>
+
+  <properties>
+    <maven.compiler.release>11</maven.compiler.release>
+  </properties>
+
+  <dependencies>
+    <dependency>
+      <groupId>com.dylibso.chicory</groupId>
+      <artifactId>annotations</artifactId>
+      <version>1.6.1</version>
+      <scope>provided</scope>
+    </dependency>
+    <dependency>
+      <groupId>org.junit.jupiter</groupId>
+      <artifactId>junit-jupiter</artifactId>
+      <version>5.11.4</version>
+      <scope>test</scope>
+    </dependency>
+  </dependencies>
+
+  <build>
+    <plugins>
+      <!-- <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-compiler-plugin</artifactId>
+        <version>3.15.0</version>
+        <configuration>
+          <release>${maven.compiler.release}</release>
+          <annotationProcessorPaths combine.children="append">
+            <path>
+              <groupId>com.dylibso.chicory</groupId>
+              <artifactId>annotations-processor</artifactId>
+              <version>1.6.1</version>
+            </path>
+          </annotationProcessorPaths>
+        </configuration>
+      </plugin> -->
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-shade-plugin</artifactId>
+        <executions>
+          <execution>
+            <goals>
+              <goal>shade</goal>
+            </goals>
+            <phase>package</phase>
+            <configuration>
+              <createDependencyReducedPom>false</createDependencyReducedPom>
+              <transformers>
+                <transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
+                  <mainClass>com.dylibso.chicory.wabt.Main</mainClass>
+                </transformer>
+              </transformers>
+            </configuration>
+          </execution>
+        </executions>
+      </plugin>
+    </plugins>
+  </build>
+</project>

decompiled-wabt/run.sh

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+#!/bin/bash
+set -e
+
+DIR="$(cd "$(dirname "$0")" && pwd)"
+OUT="$DIR/target/classes"
+
+java -cp "$OUT" com.dylibso.chicory.wabt.Main "$@"

decompiled-wabt/src/main/java/com/dylibso/chicory/log/BasicLogger.java

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+package com.dylibso.chicory.log;
+
+public class BasicLogger implements Logger {
+    private static final java.util.logging.Logger LOGGER =
+            java.util.logging.Logger.getLogger("chicory");
+
+    @Override
+    public void log(Level level, String msg, Throwable throwable) {
+        LOGGER.log(toJavaLoggerLevel(level), msg, throwable);
+    }
+
+    @Override
+    public boolean isLoggable(Level level) {
+        return LOGGER.isLoggable(toJavaLoggerLevel(level));
+    }
+
+    java.util.logging.Level toJavaLoggerLevel(Logger.Level level) {
+        switch (level) {
+            case ALL:
+                return java.util.logging.Level.ALL;
+            case TRACE:
+                return java.util.logging.Level.FINEST;
+            case DEBUG:
+                return java.util.logging.Level.FINE;
+            case INFO:
+                return java.util.logging.Level.INFO;
+            case WARNING:
+                return java.util.logging.Level.WARNING;
+            case ERROR:
+                return java.util.logging.Level.SEVERE;
+            case OFF:
+                return java.util.logging.Level.OFF;
+            default:
+                throw new IllegalArgumentException("Unsupported logger level: " + level);
+        }
+    }
+}