[Bug 48324] New: cl.exe fails to compile c++ due to error C2177: constant too big on float constant

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=48324

            Bug ID: 48324
           Summary: cl.exe fails to compile c++ due to error C2177:
                    constant too big on float constant
           Product: Wine
           Version: 5.0-rc2
          Hardware: x86
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: msvcrt
          Assignee: wine-bugs at winehq.org
          Reporter: rpisl at seznam.cz
      Distribution: ---

Commit c22af971c287933a137c9fbecc81823812e12b7a is a regression for me. I use
32bit cl.exe on 64bit Wine prefix. I was not affected by
https://bugs.winehq.org/show_bug.cgi?id=48160. I have MSVC 2015 build tools
installed using vs installer 2019. But since this commit, I get "error C2177:
constant too big" on following simple program:

#include <stdio.h>
void main()
{
    printf("%f\n", 3.4028234663852886E38f);
}

On Windows, it shows:
340282346638528859811704183484516925440.000000

3.4028234663852887E38f is also OK and shows the same,
3.4028234663852888E38f fails: error C2177: constant too big

On Wine 5.0-r2 3.4028234663852886E38f fails, 3.4028234663852885E38f is OK.
On Wine 5.0-r1 it behaves like on Windows.

During the compilation, atof() is called:
0073:Call ucrtbase.atof(0143e180 "3.4028234663852886E38f") ret=01a20d25

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