Status: Accepted
Owner: [email protected]
CC: [email protected]
Labels: Type-Bug Priority-High
New issue 3869 by [email protected]: Turbo deoptimization fails
mysteriously.
https://code.google.com/p/v8/issues/detail?id=3869
I have added the attached patch. The patch just adds a runtime function
that throws an exception:
RUNTIME_FUNCTION(Runtime_ThrowConstructorNonCallableError) {
HandleScope scope(isolate);
DCHECK(args.length() == 0);
THROW_NEW_ERROR_RETURN_FAILURE(
isolate,
NewTypeError("constructor_noncallable", HandleVector<Object>(NULL,
0)));
}
All very simple and almost exactly a copy of Runtime_ThrowNonMethodError.
However in the following program function f() does not crash, but function
g() causes a crash during stacktrace building! No idea why.
[Only crashes with: --turbo-deoptimization --turbo-filter=* --always-opt
--nohard-abort --allow-natives-syntax]
'use strict';
function f() {
if (!%_IsConstructCall()) {
return %ThrowNonMethodError();
}
}
try {
f();
} catch (e) {}
function g() {
if (!%_IsConstructCall()) {
return %ThrowConstructorNonCallableError();
}
}
try {
g();
} catch(e) {}
Attachments:
patch 2.0 KB
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