v8/test/inspector/debugger/stepping-tail-call-expected.txt

Checks stepping over tail calls.

Running test: testStepOver
f (:2:14)
f (:3:22)
f (:3:22)
f (:3:22)
(anonymous) (:5:0)
function f(x) {
  if (x == 2) #debugger;
  if (x-- > 0) return f(x);

Debugger.stepOver called
f (:3:2)
f (:3:22)
f (:3:22)
f (:3:22)
(anonymous) (:5:0)
  if (x == 2) debugger;
  #if (x-- > 0) return f(x);
}

Debugger.stepOver called
f (:3:15)
f (:3:22)
f (:3:22)
f (:3:22)
(anonymous) (:5:0)
  if (x == 2) debugger;
  if (x-- > 0) #return f(x);
}

Debugger.stepOver called
f (:4:0)
f (:3:22)
f (:3:22)
f (:3:22)
(anonymous) (:5:0)
  if (x-- > 0) return f(x);
#}
f(5);

Debugger.stepOver called
f (:4:0)
f (:3:22)
f (:3:22)
(anonymous) (:5:0)
  if (x-- > 0) return f(x);
#}
f(5);

Debugger.stepOver called
f (:4:0)
f (:3:22)
(anonymous) (:5:0)
  if (x-- > 0) return f(x);
#}
f(5);

Debugger.stepOver called
f (:4:0)
(anonymous) (:5:0)
  if (x-- > 0) return f(x);
#}
f(5);

Debugger.stepOver called
(anonymous) (:5:5)
}
f(5);#


Debugger.resume called

Running test: testStepOut
f (:2:14)
f (:3:22)
f (:3:22)
f (:3:22)
(anonymous) (:5:0)
function f(x) {
  if (x == 2) #debugger;
  if (x-- > 0) return f(x);

Debugger.stepOut called
f (:4:0)
f (:3:22)
f (:3:22)
(anonymous) (:5:0)
  if (x-- > 0) return f(x);
#}
f(5);

Debugger.stepOut called
f (:4:0)
f (:3:22)
(anonymous) (:5:0)
  if (x-- > 0) return f(x);
#}
f(5);

Debugger.stepOut called
f (:4:0)
(anonymous) (:5:0)
  if (x-- > 0) return f(x);
#}
f(5);

Debugger.stepOut called
(anonymous) (:5:5)
}
f(5);#


Debugger.resume called

Running test: testStepOutFromReturn
f (:2:14)
f (:3:22)
f (:3:22)
f (:3:22)
(anonymous) (:5:0)
function f(x) {
  if (x == 2) #debugger;
  if (x-- > 0) return f(x);

Debugger.stepOver called
f (:3:2)
f (:3:22)
f (:3:22)
f (:3:22)
(anonymous) (:5:0)
  if (x == 2) debugger;
  #if (x-- > 0) return f(x);
}

Debugger.stepOver called
f (:3:15)
f (:3:22)
f (:3:22)
f (:3:22)
(anonymous) (:5:0)
  if (x == 2) debugger;
  if (x-- > 0) #return f(x);
}

Debugger.stepOut called
f (:4:0)
f (:3:22)
f (:3:22)
(anonymous) (:5:0)
  if (x-- > 0) return f(x);
#}
f(5);

Debugger.stepOut called
f (:4:0)
f (:3:22)
(anonymous) (:5:0)
  if (x-- > 0) return f(x);
#}
f(5);

Debugger.stepOut called
f (:4:0)
(anonymous) (:5:0)
  if (x-- > 0) return f(x);
#}
f(5);

Debugger.stepOut called
(anonymous) (:5:5)
}
f(5);#


Debugger.resume called
[debugger] tuned StepNext and StepOut at return position Proposed behaviour: - StepNext at return position go into next function call (no changes with current behavior, but implemented in v8::Debug instead of hack on inspector side); - StepOut at return position go into next non-current function call. We need this to have better stepping in cases with native functions, blackboxed functions and/or different embedder calls (e.g. event listeners). New behavior could be illustrated with two examples (for more see stepping-with-natives-and-frameworks test): - let's assume that we've blackboxed callAll function, this function just takes its arguments and call one after another: var foo = () => 1; callAll(foo, foo, () => 2); If we break inside of first call of function foo. Then on.. ..StepNext - we're able to reach second call of function foo, ..StepOut - we're able to reach () => 2 call. - let's consider case with native function: [1,2,3].map(x => x * 2) If we break inside of first callback call, then with StepNext we can iterate through all calls of callback, with StepOut we go to next statement after .map call. Implementation details: - when we request break we schedule step-in function call for any step action at return position and for step-in at any position, - when we request StepOut at return position - we mark current function as needed-to-be-ignored inside of PrepareStepIn(function) call, - when we request StepOut at not return position - we set break at return position and ask debugger to just repeat last step action on next stepping-related break. Design doc: https://docs.google.com/document/d/1ihXHOIhP_q-fJCA0e2EiXz_Zr3B08KMjaPifcaqZ60Q/edit BUG=v8:6118,chromium:583193 R=dgozman@chromium.org,yangguo@chromium.org Review-Url: https://codereview.chromium.org/2758483002 Cr-Commit-Position: refs/heads/master@{#44028} 2017-03-22 14:16:18 +00:00			`Checks stepping over tail calls.`

			`Running test: testStepOver`
			`f (:2:14)`
			`f (:3:22)`
			`f (:3:22)`
			`f (:3:22)`
			`(anonymous) (:5:0)`
			`function f(x) {`
			`if (x == 2) #debugger;`
			`if (x-- > 0) return f(x);`

			`Debugger.stepOver called`
			`f (:3:2)`
			`f (:3:22)`
			`f (:3:22)`
			`f (:3:22)`
			`(anonymous) (:5:0)`
			`if (x == 2) debugger;`
			`#if (x-- > 0) return f(x);`
			`}`

			`Debugger.stepOver called`
			`f (:3:15)`
			`f (:3:22)`
			`f (:3:22)`
			`f (:3:22)`
			`(anonymous) (:5:0)`
			`if (x == 2) debugger;`
			`if (x-- > 0) #return f(x);`
			`}`

			`Debugger.stepOver called`
			`f (:4:0)`
			`f (:3:22)`
			`f (:3:22)`
			`f (:3:22)`
			`(anonymous) (:5:0)`
			`if (x-- > 0) return f(x);`
			`#}`
			`f(5);`

			`Debugger.stepOver called`
			`f (:4:0)`
			`f (:3:22)`
			`f (:3:22)`
			`(anonymous) (:5:0)`
			`if (x-- > 0) return f(x);`
			`#}`
			`f(5);`

			`Debugger.stepOver called`
			`f (:4:0)`
			`f (:3:22)`
			`(anonymous) (:5:0)`
			`if (x-- > 0) return f(x);`
			`#}`
			`f(5);`

			`Debugger.stepOver called`
			`f (:4:0)`
			`(anonymous) (:5:0)`
			`if (x-- > 0) return f(x);`
			`#}`
			`f(5);`

			`Debugger.stepOver called`
			`(anonymous) (:5:5)`
			`}`
			`f(5);#`


			`Debugger.resume called`

			`Running test: testStepOut`
			`f (:2:14)`
			`f (:3:22)`
			`f (:3:22)`
			`f (:3:22)`
			`(anonymous) (:5:0)`
			`function f(x) {`
			`if (x == 2) #debugger;`
			`if (x-- > 0) return f(x);`

			`Debugger.stepOut called`
			`f (:4:0)`
			`f (:3:22)`
			`f (:3:22)`
			`(anonymous) (:5:0)`
			`if (x-- > 0) return f(x);`
			`#}`
			`f(5);`

			`Debugger.stepOut called`
			`f (:4:0)`
			`f (:3:22)`
			`(anonymous) (:5:0)`
			`if (x-- > 0) return f(x);`
			`#}`
			`f(5);`

			`Debugger.stepOut called`
			`f (:4:0)`
			`(anonymous) (:5:0)`
			`if (x-- > 0) return f(x);`
			`#}`
			`f(5);`

			`Debugger.stepOut called`
			`(anonymous) (:5:5)`
			`}`
			`f(5);#`


			`Debugger.resume called`

			`Running test: testStepOutFromReturn`
			`f (:2:14)`
			`f (:3:22)`
			`f (:3:22)`
			`f (:3:22)`
			`(anonymous) (:5:0)`
			`function f(x) {`
			`if (x == 2) #debugger;`
			`if (x-- > 0) return f(x);`

			`Debugger.stepOver called`
			`f (:3:2)`
			`f (:3:22)`
			`f (:3:22)`
			`f (:3:22)`
			`(anonymous) (:5:0)`
			`if (x == 2) debugger;`
			`#if (x-- > 0) return f(x);`
			`}`

			`Debugger.stepOver called`
			`f (:3:15)`
			`f (:3:22)`
			`f (:3:22)`
			`f (:3:22)`
			`(anonymous) (:5:0)`
			`if (x == 2) debugger;`
			`if (x-- > 0) #return f(x);`
			`}`

			`Debugger.stepOut called`
			`f (:4:0)`
			`f (:3:22)`
			`f (:3:22)`
			`(anonymous) (:5:0)`
			`if (x-- > 0) return f(x);`
			`#}`
			`f(5);`

			`Debugger.stepOut called`
			`f (:4:0)`
			`f (:3:22)`
			`(anonymous) (:5:0)`
			`if (x-- > 0) return f(x);`
			`#}`
			`f(5);`

			`Debugger.stepOut called`
			`f (:4:0)`
			`(anonymous) (:5:0)`
			`if (x-- > 0) return f(x);`
			`#}`
			`f(5);`

			`Debugger.stepOut called`
			`(anonymous) (:5:5)`
			`}`
			`f(5);#`


			`Debugger.resume called`