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/*
* Copyright (C) 2017 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
public class Main {
static Main obj;
// Make 'doCheck' volatile to prevent optimizations
// in $noinline$bar like LICM that could hoist the null check
// out of the loop.
static volatile boolean doCheck = true;
float floatField;
int intField;
public static void main(String[] args) {
try {
$noinline$bar();
throw new Error("Expected NPE");
} catch (NullPointerException e) {
check(e, 29, 52, "$noinline$bar");
}
try {
$noinline$foo();
throw new Error("Expected NPE");
} catch (NullPointerException e) {
check(e, 36, 44, "$noinline$foo");
}
}
public static float $noinline$foo() {
int v1 = obj.intField;
float v2 = obj.floatField;
return v2;
}
public static float $noinline$bar() {
float a = 0;
while (doCheck) {
float f = obj.floatField;
int i = obj.intField;
a = (float)i + f;
}
return a;
}
static void check(NullPointerException npe, int mainLine, int methodLine, String methodName) {
StackTraceElement[] trace = npe.getStackTrace();
checkElement(trace[0], "Main", methodName, "Main.java", methodLine);
checkElement(trace[1], "Main", "main", "Main.java", mainLine);
}
static void checkElement(StackTraceElement element,
String declaringClass, String methodName,
String fileName, int lineNumber) {
assertEquals(declaringClass, element.getClassName());
assertEquals(methodName, element.getMethodName());
assertEquals(fileName, element.getFileName());
assertEquals(lineNumber, element.getLineNumber());
}
static void assertEquals(Object expected, Object actual) {
if (!expected.equals(actual)) {
String msg = "Expected \"" + expected + "\" but got \"" + actual + "\"";
throw new AssertionError(msg);
}
}
static void assertEquals(int expected, int actual) {
if (expected != actual) {
throw new AssertionError("Expected " + expected + " got " + actual);
}
}
}
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