Fix Number.isNaN sometimes returning false for NaN

We use Encode(std::isnan(v)) and while std::isnan() is documented to
have bool as a return type, there is the case where cmath pulls ::isnan
into std with a using declaration when ::isnan() will sometimes return
an int.

See also https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69450

This appears to be the only case where we use the overloaded Encode()
constructor in conjunction with a direct std::isXXX call.

[ChangeLog][QtQml] Fix Number.isNaN() returning incorrect values with
some glibc versions.

Task-number: QTBUG-63464
Change-Id: Iaaba3735f7400eac0950aad8f3ac47befaf9dab9
Reviewed-by: Ville Voutilainen <ville.voutilainen@qt.io>
Reviewed-by: Lars Knoll <lars.knoll@qt.io>

0 files changed, 0 insertions, 0 deletions