# Minimized program:
a = [];
a.__defineGetter__("push", function() { return foo(); });
a.push();
function foo(boom) {
 var b = new boom();
}

# Compared nocrankshaft with noturbo_opt

# Flags of nocrankshaft:
--abort_on_stack_overflow --expose-gc --allow-natives-syntax --invoke-weak-callbacks --omit-quit  --random-seed -1856604779 --nocrankshaft
# Flags of noturbo_opt:
--abort_on_stack_overflow --expose-gc --allow-natives-syntax --invoke-weak-callbacks --omit-quit  --random-seed -1856604779 --always-opt --turbo-filter=~

Difference:
- out7_opt/fuzz-34512.js.minimized:5: TypeError: boom is not a constructor
+ out7_opt/fuzz-34512.js.minimized:5: TypeError: undefined is not a constructor

### Start of configuration nocrankshaft:
out7_opt/fuzz-34512.js.minimized:5: TypeError: boom is not a constructor
 var b = new boom();
         ^
TypeError: boom is not a constructor
    at foo (out7_opt/fuzz-34512.js.minimized:5:10)
    at Array.push (out7_opt/fuzz-34512.js.minimized:2:48)
    at out7_opt/fuzz-34512.js.minimized:3:2


### End of configuration nocrankshaft

### Start of configuration noturbo_opt:
out7_opt/fuzz-34512.js.minimized:5: TypeError: undefined is not a constructor
 var b = new boom();
         ^
TypeError: undefined is not a constructor
    at foo (out7_opt/fuzz-34512.js.minimized:5:10)
    at Array.push (out7_opt/fuzz-34512.js.minimized:2:48)
    at out7_opt/fuzz-34512.js.minimized:3:2


### End of configuration noturbo_opt

# Next one. Minimized program:
try {
} catch(e) {; }
5,
             foo();


# Compared nocrankshaft with noturbo_opt

# Flags of nocrankshaft:
--abort_on_stack_overflow --expose-gc --allow-natives-syntax --invoke-weak-callbacks --omit-quit  --random-seed 524715207 --nocrankshaft
# Flags of noturbo_opt:
--abort_on_stack_overflow --expose-gc --allow-natives-syntax --invoke-weak-callbacks --omit-quit  --random-seed 524715207 --always-opt --turbo-filter=~

Difference:
- 5,
+              foo();

### Start of configuration nocrankshaft:
out7_opt/fuzz-47438.js.minimized:3: ReferenceError: foo is not defined
5,
^
ReferenceError: foo is not defined
    at out7_opt/fuzz-47438.js.minimized:3:1


### End of configuration nocrankshaft

### Start of configuration noturbo_opt:
out7_opt/fuzz-47438.js.minimized:4: ReferenceError: foo is not defined
             foo();
             ^
ReferenceError: foo is not defined
    at out7_opt/fuzz-47438.js.minimized:4:14


### End of configuration noturbo_opt

# A different one with proxies:
this.__proto__ = new Proxy({}, {});
(function () {
  eval("f()");
})()


# Compared nocrankshaft with noturbo_opt

# Flags of nocrankshaft:
--abort_on_stack_overflow --expose-gc --allow-natives-syntax --invoke-weak-callbacks --omit-quit  --random-seed 1489761483 --nocrankshaft
# Flags of noturbo_opt:
--abort_on_stack_overflow --expose-gc --allow-natives-syntax --invoke-weak-callbacks --omit-quit  --random-seed 1489761483 --always-opt --turbo-filter=~

Difference:
- undefined:1: ReferenceError: f is not defined
+ undefined:1: TypeError: Trying to access 'f' through proxy

### Start of configuration nocrankshaft:
undefined:1: ReferenceError: f is not defined
f()
^
ReferenceError: f is not defined
    at eval (eval at <anonymous> (out9_noturbo_opt/fuzz-33528.js.minimized:3:3), <anonymous>:1:1)
    at out9_noturbo_opt/fuzz-33528.js.minimized:3:3
    at out9_noturbo_opt/fuzz-33528.js.minimized:4:3


### End of configuration nocrankshaft

### Start of configuration noturbo_opt:
undefined:1: TypeError: Trying to access 'f' through proxy
f()
^
TypeError: Trying to access 'f' through proxy
    at eval (eval at <anonymous> (out9_noturbo_opt/fuzz-33528.js.minimized:3:3), <anonymous>:1:1)
    at out9_noturbo_opt/fuzz-33528.js.minimized:3:3
    at out9_noturbo_opt/fuzz-33528.js.minimized:4:3


### End of configuration noturbo_opt

Interesting. How much do we care for differences between CS and and FCG?

The following revision refers to this bug:
  https://chromium.googlesource.com/v8/v8.git/+/1dfcc4b6876d866e803b0a0af05bd27418443cbe

commit 1dfcc4b6876d866e803b0a0af05bd27418443cbe
Author: Michael Achenbach <machenbach@chromium.org>
Date: Thu Apr 27 14:49:13 2017

[foozzie] Remove obsolete suppressions

Most of these suppressions were for the old asm-validator or for the old compiler pipeline. Some more are just optimistically removed.

Bug:  chromium:681088 ,  chromium:681241 , chromium:681806,  chromium:662840 
NOTRY=true

Change-Id: I4c6851a72d22070026eeaca90ad3394cfce10f90
Reviewed-on: https://chromium-review.googlesource.com/488641
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#44942}
[modify] https://crrev.com/1dfcc4b6876d866e803b0a0af05bd27418443cbe/tools/foozzie/v8_foozzie_test.py
[modify] https://crrev.com/1dfcc4b6876d866e803b0a0af05bd27418443cbe/tools/foozzie/v8_suppressions.py