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7f20cf56e6
v8/test/inspector/debugger/step-into-expected.txt
Benedikt Meurer 887bacacb0 [debug] Consistent Step-In behavior for generator functions. 
This change addresses inconsistencies wrt. to stepping into generator
functions and breaking on the implicit initial yield. The new behavior
is the following:

 1. Stepping into a generator function doesn't trigger "generator
    stepping", but rather pauses right before the initial yield
    (assuming there a no non-simple parameters in between).
 2. When paused on the initial yield and stepping into or over, we also
    don't turn on "generator stepping" immediately, but rather return to
    the caller and only enter "generator stepping" on SuspendGenerator
    bytecodes that correspond to `yield`s or `await`s in the source
    code.

This matches the stepping behavior of regular functions more closely and
seems like a good compromise.

Fixed: chromium:901814
Change-Id: Ifc6c174011df1afea183e2c6ec21de27d72b17a7
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2949099
Commit-Queue: Yang Guo <yangguo@chromium.org>
Auto-Submit: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75066}
2021-06-10 07:49:04 +00:00

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Checks possible break locations.
Running test: testEval
break at:
function testEval() {
#eval('// comment only');
eval('// comment only\n');
break at:
// comment only#
break at:
eval('// comment only');
#eval('// comment only\n');
}
break at:
// comment only
#
break at:
eval('// comment only\n');
#}
Running test: testProcedure
break at:
function testProcedure() {
#procedure();
}
break at:
function procedure() {
var a = #1;
var b = 2;
break at:
var a = 1;
var b = #2;
}
break at:
var b = 2;
#}
break at:
procedure();
#}
Running test: testIf
break at:
var a;
if (true) #a = true;
if (!a) {
break at:
if (true) a = true;
#if (!a) {
a = true;
break at:
} else {
#a = false;
}
break at:
}
#if (returnTrue()) {
a = false;
break at:
function returnTrue() {
#return true;
}
break at:
function returnTrue() {
return true;#
}
break at:
if (returnTrue()) {
#a = false;
} else {
break at:
}
#}
Running test: testEmptyFunction
break at:
function testEmptyFunction() {
#emptyFunction();
}
break at:
function emptyFunction() {#}
break at:
emptyFunction();
#}
Running test: testCallArguments
break at:
function testCallArguments() {
#twoArguments(emptyFunction(), emptyFunction());
}
break at:
function emptyFunction() {#}
break at:
function testCallArguments() {
twoArguments(emptyFunction(), #emptyFunction());
}
break at:
function emptyFunction() {#}
break at:
function testCallArguments() {
#twoArguments(emptyFunction(), emptyFunction());
}
break at:
function twoArguments(a1, a2) {
#}
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twoArguments(emptyFunction(), emptyFunction());
#}
Running test: testNested
break at:
}
#nested1();
}
break at:
}
return #nested2();
}
break at:
}
#nested3();
return;
break at:
function nested3() {
#}
nested3();
break at:
nested3();
#return;
}
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nested3();
return;#
}
break at:
}
return nested2();#
}
break at:
nested1();
#}
Running test: testCallAtReturn
break at:
function testCallAtReturn() {
#return returnCall();
}
break at:
function returnCall() {
#return return42();
}
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function return42() {
#return 42;
}
break at:
function return42() {
return 42;#
}
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function returnCall() {
return return42();#
}
break at:
function testCallAtReturn() {
return returnCall();#
}
Running test: testWith
break at:
function testWith() {
#with (returnObject()) {
foo();
break at:
function returnObject() {
#return ({ foo: () => 42 });
}
break at:
function returnObject() {
return ({ foo: () => 42 });#
}
break at:
with (returnObject()) {
#foo();
}
break at:
function returnObject() {
return ({ foo: () => #42 });
}
break at:
function returnObject() {
return ({ foo: () => 42# });
}
break at:
}
#with({}) {
return;
break at:
with({}) {
#return;
}
break at:
with({}) {
return;#
}
Running test: testForLoop
break at:
function testForLoop() {
for (var i = #0; i < 1; ++i) {}
for (var i = 0; i < 1; ++i) i;
break at:
function testForLoop() {
for (var i = 0; i #< 1; ++i) {}
for (var i = 0; i < 1; ++i) i;
break at:
function testForLoop() {
for (var i = 0; i < 1; ++#i) {}
for (var i = 0; i < 1; ++i) i;
break at:
function testForLoop() {
for (var i = 0; i #< 1; ++i) {}
for (var i = 0; i < 1; ++i) i;
break at:
for (var i = 0; i < 1; ++i) {}
for (var i = #0; i < 1; ++i) i;
for (var i = 0; i < 0; ++i) {}
break at:
for (var i = 0; i < 1; ++i) {}
for (var i = 0; i #< 1; ++i) i;
for (var i = 0; i < 0; ++i) {}
break at:
for (var i = 0; i < 1; ++i) {}
for (var i = 0; i < 1; ++#i) i;
for (var i = 0; i < 0; ++i) {}
break at:
for (var i = 0; i < 1; ++i) {}
for (var i = 0; i #< 1; ++i) i;
for (var i = 0; i < 0; ++i) {}
break at:
for (var i = 0; i < 1; ++i) i;
for (var i = #0; i < 0; ++i) {}
}
break at:
for (var i = 0; i < 1; ++i) i;
for (var i = 0; i #< 0; ++i) {}
}
break at:
for (var i = 0; i < 0; ++i) {}
#}
Running test: testForOfLoop
break at:
function testForOfLoop() {
for (var k of #[]) {}
for (var k of [1]) k;
break at:
function testForOfLoop() {
for (var #k of []) {}
for (var k of [1]) k;
break at:
for (var k of []) {}
for (var k of #[1]) k;
var a = [];
break at:
for (var k of []) {}
for (var #k of [1]) k;
var a = [];
break at:
for (var k of []) {}
for (var k of [1]) #k;
var a = [];
break at:
for (var k of []) {}
for (var #k of [1]) k;
var a = [];
break at:
for (var k of [1]) k;
var a = #[];
for (var k of a) {}
break at:
var a = [];
for (var k of #a) {}
}
break at:
var a = [];
for (var #k of a) {}
}
break at:
for (var k of a) {}
#}
Running test: testForInLoop
break at:
function testForInLoop() {
var o = #{};
for (var k in o) {}
break at:
var o = {};
for (var k in #o) {}
for (var k in o) k;
break at:
var o = {};
for (var #k in o) {}
for (var k in o) k;
break at:
for (var k in o) {}
for (var k in #o) k;
for (var k in { a:1 }) {}
break at:
for (var k in o) {}
for (var #k in o) k;
for (var k in { a:1 }) {}
break at:
for (var k in o) k;
for (var k in #{ a:1 }) {}
for (var k in { a:1 }) k;
break at:
for (var k in o) k;
for (var #k in { a:1 }) {}
for (var k in { a:1 }) k;
break at:
for (var k in { a:1 }) {}
for (var k in #{ a:1 }) k;
}
break at:
for (var k in { a:1 }) {}
for (var #k in { a:1 }) k;
}
break at:
for (var k in { a:1 }) {}
for (var k in { a:1 }) #k;
}
break at:
for (var k in { a:1 }) {}
for (var #k in { a:1 }) k;
}
break at:
for (var k in { a:1 }) k;
#}
Running test: testSimpleExpressions
break at:
1 + 2 + 3;
var a = #1;
++a;
break at:
var a = 1;
#++a;
a--;
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++a;
#a--;
}
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a--;
#}
Running test: testGetter
break at:
function testGetter() {
#getterFoo();
}
break at:
Object.defineProperty(this, 'getterFoo', {
get: () => #return42
});
break at:
Object.defineProperty(this, 'getterFoo', {
get: () => return42#
});
break at:
function testGetter() {
#getterFoo();
}
break at:
function return42() {
#return 42;
}
break at:
function return42() {
return 42;#
}
break at:
getterFoo();
#}
Running test: testChainedCalls
break at:
function testChainedCalls() {
#obj.foo().boo()();
}
break at:
var obj = {
foo: () => (#{
boo: () => return42
break at:
boo: () => return42
})#
};
break at:
function testChainedCalls() {
obj.foo().#boo()();
}
break at:
foo: () => ({
boo: () => #return42
})
break at:
foo: () => ({
boo: () => return42#
})
break at:
function testChainedCalls() {
obj.foo().boo()#();
}
break at:
function return42() {
#return 42;
}
break at:
function return42() {
return 42;#
}
break at:
obj.foo().boo()();
#}
Running test: testChainedWithNative
break at:
function testChainedWithNative() {
#Array.from([1]).concat([2]).map(v => v * 2);
}
break at:
function testChainedWithNative() {
Array.from([1]).concat([2]).map(v => v #* 2);
}
break at:
function testChainedWithNative() {
Array.from([1]).concat([2]).map(v => v * 2#);
}
break at:
function testChainedWithNative() {
Array.from([1]).concat([2]).map(v => v #* 2);
}
break at:
function testChainedWithNative() {
Array.from([1]).concat([2]).map(v => v * 2#);
}
break at:
Array.from([1]).concat([2]).map(v => v * 2);
#}
Running test: testPromiseThen
break at:
function testPromiseThen() {
#return Promise.resolve().then(v => v * 2).then(v => v * 2);
}
break at:
function testPromiseThen() {
return Promise.resolve().then(v => v * 2).then(v => v * 2);#
}
Running test: testSwitch
break at:
function testSwitch() {
for (var i = #0; i < 3; ++i) {
switch(i) {
break at:
function testSwitch() {
for (var i = 0; i #< 3; ++i) {
switch(i) {
break at:
for (var i = 0; i < 3; ++i) {
#switch(i) {
case 0: continue;
break at:
switch(i) {
case 0: #continue;
case 1: return42(); break;
break at:
function testSwitch() {
for (var i = 0; i < 3; ++#i) {
switch(i) {
break at:
function testSwitch() {
for (var i = 0; i #< 3; ++i) {
switch(i) {
break at:
for (var i = 0; i < 3; ++i) {
#switch(i) {
case 0: continue;
break at:
case 0: continue;
case 1: #return42(); break;
default: return;
break at:
function return42() {
#return 42;
}
break at:
function return42() {
return 42;#
}
break at:
case 0: continue;
case 1: return42(); #break;
default: return;
break at:
function testSwitch() {
for (var i = 0; i < 3; ++#i) {
switch(i) {
break at:
function testSwitch() {
for (var i = 0; i #< 3; ++i) {
switch(i) {
break at:
for (var i = 0; i < 3; ++i) {
#switch(i) {
case 0: continue;
break at:
case 1: return42(); break;
default: #return;
}
break at:
case 1: return42(); break;
default: return;#
}
Running test: testGenerator
break at:
function testGenerator() {
var gen = #idMaker();
return42();
break at:
function* idMaker#() {
yield 1;
break at:
var gen = idMaker();
#return42();
gen.next().value;
break at:
function return42() {
#return 42;
}
break at:
function return42() {
return 42;#
}
break at:
return42();
gen.#next().value;
debugger;
break at:
function* idMaker() {
#yield 1;
yield 2;
break at:
gen.next().value;
#debugger;
gen.next().value;
break at:
debugger;
gen.#next().value;
return42();
break at:
yield 1;
#yield 2;
yield 3;
break at:
yield 2;
#yield 3;
}
break at:
yield 3;
#}
break at:
gen.next().value;
#}
Running test: testCaughtException
break at:
try {
#throwException()
} catch (e) {
break at:
function throwException() {
#throw new Error();
}
break at:
} catch (e) {
#return;
}
break at:
} catch (e) {
return;#
}
Running test: testClasses
break at:
}
#new Lion().speak();
}
break at:
constructor(name) {
#super(name);
}
break at:
constructor(name) {
#this.name = name;
}
break at:
this.name = name;
#}
break at:
super(name);
#}
break at:
}
new Lion().#speak();
}
break at:
speak() {
#super.speak();
}
break at:
speak() {
#}
}
break at:
super.speak();
#}
}
break at:
new Lion().speak();
#}
Running test: testAsyncAwait
break at:
async function testAsyncAwait() {
#await asyncFoo();
await awaitBoo();
break at:
async function asyncFoo() {
#await Promise.resolve().then(v => v * 2);
return42();
break at:
function return42() {
#return 42;
}
break at:
function return42() {
return 42;#
}
break at:
async function asyncBoo() {
#await Promise.resolve();
}
Running test: testPromiseAsyncWithCode
break at:
var nextTest;
var testPromise = #new Promise(resolve => nextTest = resolve);
async function main() {
break at:
var nextTest;
var testPromise = new Promise(resolve => nextTest #= resolve);
async function main() {
break at:
var nextTest;
var testPromise = new Promise(resolve => nextTest = resolve#);
async function main() {
break at:
}
#main();
return testPromise;
break at:
}
#setTimeout(returnCall, 0);
await foo();
break at:
setTimeout(returnCall, 0);
await #foo();
await foo();
break at:
var resolveNested;
var p = #new Promise(resolve => resolveNested = resolve);
setTimeout(resolveNested, 0);
break at:
var resolveNested;
var p = new Promise(resolve => resolveNested #= resolve);
setTimeout(resolveNested, 0);
break at:
var resolveNested;
var p = new Promise(resolve => resolveNested = resolve#);
setTimeout(resolveNested, 0);
break at:
var p = new Promise(resolve => resolveNested = resolve);
#setTimeout(resolveNested, 0);
await p;
break at:
setTimeout(resolveNested, 0);
#await p;
}
break at:
var resolveNested;
var p = #new Promise(resolve => resolveNested = resolve);
setTimeout(resolveNested, 0);
break at:
var resolveNested;
var p = new Promise(resolve => resolveNested #= resolve);
setTimeout(resolveNested, 0);
break at:
var resolveNested;
var p = new Promise(resolve => resolveNested = resolve#);
setTimeout(resolveNested, 0);
break at:
var p = new Promise(resolve => resolveNested = resolve);
#setTimeout(resolveNested, 0);
await p;
break at:
setTimeout(resolveNested, 0);
#await p;
}
Running test: testPromiseComplex
break at:
var nextTest;
var testPromise = #new Promise(resolve => nextTest = resolve);
async function main() {
break at:
var nextTest;
var testPromise = new Promise(resolve => nextTest #= resolve);
async function main() {
break at:
var nextTest;
var testPromise = new Promise(resolve => nextTest = resolve#);
async function main() {
break at:
}
#main();
return testPromise;
break at:
}
var x = #1;
var y = 2;
break at:
var x = 1;
var y = #2;
returnFunction(emptyFunction(), x++, --y, x => 2 * x, returnCall())().a = await foo((a => 2 *a)(5));
break at:
var y = 2;
#returnFunction(emptyFunction(), x++, --y, x => 2 * x, returnCall())().a = await foo((a => 2 *a)(5));
nextTest();
break at:
function emptyFunction() {#}
break at:
var y = 2;
returnFunction(emptyFunction(), x++, --y, x => 2 * x, #returnCall())().a = await foo((a => 2 *a)(5));
nextTest();
break at:
function returnCall() {
#return return42();
}
break at:
function return42() {
#return 42;
}
break at:
function return42() {
return 42;#
}
break at:
function returnCall() {
return return42();#
}
break at:
var y = 2;
#returnFunction(emptyFunction(), x++, --y, x => 2 * x, returnCall())().a = await foo((a => 2 *a)(5));
nextTest();
break at:
function returnFunction() {
#return returnObject;
}
break at:
function returnFunction() {
return returnObject;#
}
break at:
var y = 2;
returnFunction(emptyFunction(), x++, --y, x => 2 * x, returnCall())#().a = await foo((a => 2 *a)(5));
nextTest();
break at:
function returnObject() {
#return ({ foo: () => 42 });
}
break at:
function returnObject() {
return ({ foo: () => 42 });#
}
break at:
var y = 2;
returnFunction(emptyFunction(), x++, --y, x => 2 * x, returnCall())().a = await foo((a => 2 *a)#(5));
nextTest();
break at:
var y = 2;
returnFunction(emptyFunction(), x++, --y, x => 2 * x, returnCall())().a = await foo((a => 2 #*a)(5));
nextTest();
break at:
var y = 2;
returnFunction(emptyFunction(), x++, --y, x => 2 * x, returnCall())().a = await foo((a => 2 *a#)(5));
nextTest();
break at:
var y = 2;
returnFunction(emptyFunction(), x++, --y, x => 2 * x, returnCall())().a = await #foo((a => 2 *a)(5));
nextTest();
break at:
async function foo() {
#await Promise.resolve();
return 42;
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