Comment #6 on issue 3773 by [email protected]: V8 is not
-fsanitize=float-cast-overflow clean
https://code.google.com/p/v8/issues/detail?id=3773
FastD2I is written with the undefined behavior in mind. Here's the comment:
// The fast double-to-(unsigned-)int conversion routine does not guarantee
// rounding towards zero.
// The result is unspecified if x is infinite or NaN, or if the rounded
// integer value is outside the range of type int.
We also have a FastD2IChecked, which avoid the undefined behavior. Maybe we
can replace all FastD2I with FastD2I checked and replace
FastI2D(FastD2I(x)) calls with something else?
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