Message 239345 - Python tracker

Could you please use a define like SIGINFO_HAS_SI_BAND?

Something like:

#if defined(HAVE_SIGINFO) && !defined(__CYGWIN__)
   /* Issue #21085: In Cygwin, siginfo_t does not have si_band field. */
#  define SIGINFO_HAS_SI_BAND
#endif

And please generate patches not the git format. Otherwise, Rietveld is unable to generated the "review" link.