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// Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.
// VMOptions=--optimization_counter_threshold=10 --no-background-compilation
// This test tries to verify that we produce the correct stack trace when
// throwing exceptions even when functions are inlined.
// The test invokes a bunch of functions and then does a throw. There is a
// catch at the outer function which uses the stack trace produced to return
// a string. The test then verifies that the stack trace contains each
// method in the invocation chain. The test is run during warmup to ensure
// unoptimized code produces the correct result and is then run
// in a loop to ensure optimization kicks in and some inlining is done.
// Note: it appears that functions which have a throw are not inlined (func4)
// and functions that have try/catch in them are not optimized (func1).
// func2 is not inlined as func1 has not been optimized.
class Test {
@pragma("vm:entry-point")
String func1(var k) {
try {
for (var i = 0; i <= 50; i++) {
func2(i * k);
}
return "";
} catch (e, stacktrace) {
var result = e + "\n" + stacktrace.toString();
return result;
}
}
@pragma("vm:entry-point")
int func2(var i) {
var result = 0;
for (var k = 0; k <= 10; k++) {
result += func3(i + k);
}
return result;
}
@pragma("vm:entry-point")
int func3(var i) {
var result = 0;
for (var l = 0; l <= 1; l++) {
result += func4(i + l);
}
return result;
}
@pragma("vm:entry-point")
int func4(var i) {
var result = 0;
for (var j = 0; j <= 10; j++) {
result += func5(i + j);
}
return result;
}
@pragma("vm:entry-point")
int func5(var i) {
if (i >= 520) throw "show me inlined functions";
return i;
}
}
expectHasSubstring(String string, String substring) {
if (!string.contains(substring)) {
var sb = new StringBuffer();
sb.writeln("Expect string:");
sb.writeln(string);
sb.writeln("To have substring:");
sb.writeln(substring);
throw new Exception(sb.toString());
}
}
main() {
var x = new Test();
var result = x.func1(100000);
expectHasSubstring(result, "show me inlined functions");
expectHasSubstring(result, "Test.func1");
expectHasSubstring(result, "Test.func2");
expectHasSubstring(result, "Test.func3");
expectHasSubstring(result, "Test.func4");
expectHasSubstring(result, "Test.func5");
for (var i = 0; i <= 10; i++) {
result = x.func1(i);
}
expectHasSubstring(result, "show me inlined functions");
expectHasSubstring(result, "Test.func1");
expectHasSubstring(result, "Test.func2");
expectHasSubstring(result, "Test.func3");
expectHasSubstring(result, "Test.func4");
expectHasSubstring(result, "Test.func5");
}