[Bug 20293] New: undefined reference to 'isinf' int global.c, jsutils.c number.c on Solaris 10

http://bugs.winehq.org/show_bug.cgi?id=20293

Summary: undefined reference to 'isinf' int global.c, jsutils.c
                    number.c on Solaris 10
           Product: Wine
           Version: 1.1.30
          Platform: PC
        OS/Version: Solaris
            Status: UNCONFIRMED
          Severity: critical
          Priority: P2
         Component: jscript
        AssignedTo: [e-mail]
        ReportedBy: [e-mail]

In the Solaris 10 math.h isinf is only defined if either _STDC_C99 or
_XOPEN_SOURCE - 0 >= 600 or __C99FEATURES__ is defined.

What surprises, is that in config.h HAVE_ISINF is defined with 1. So the
configure check seems to not work correctly.

If I use CFLAGS=-D__C99FEATURES__ wine compiles fine.

This behavior is also showing up on the trunk version.