[Bug 48160] cl.exe (visual studio 2017) fails to compile c++ due to error C2177: constant too big

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=48160

Erich E. Hoover <erich.e.hoover at gmail.com> changed:

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--- Comment #9 from Erich E. Hoover <erich.e.hoover at gmail.com> ---
Created attachment 66005
  --> https://bugs.winehq.org/attachment.cgi?id=66005
implement strtod without using 'long double'

(In reply to Alexandre Julliard from comment #8)
> I don't think we want to return exactly 0 if Windows doesn't.
> But it doesn't really matter how we achieve that.

I looked into this a bit more and that may not actually be the case.  It looks
like what happens in this case is that Windows switches over to denormal values
(1e-309 is represented as 0.1e-308).  So, returning any old value under DBL_MIN
is likely to break something.  I have attached an updated patch that takes this
into account (and updates the tests to demonstrate this behavior).  Is this
something that you would be receptive to having submitted during code freeze?

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