commit 783d0c1a1c723733adcdf4249240246fc35a5bcb
author Serhiy Storchaka <storchaka@gmail.com> Sun Mar 12 14:43:12 2017 +0200
committer GitHub <noreply@github.com> Sun Mar 12 14:43:12 2017 +0200
tree 15745c18439463475dbc63be52fbad5fff4f6868
parent bc44f045e6a801903bd7530a4fc5474e657832da

bpo-28667: Fix a compile warning on FreeBSD when compare with FD_SETSIZE. (#501)

FreeBSD is the only platforms with unsigned FD_SETSIZE.

Include/fileobject.h

diff --git a/Include/fileobject.h b/Include/fileobject.h
index 6120e51..1dde17e 100644
--- a/Include/fileobject.h
+++ b/Include/fileobject.h
@@ -39,7 +39,7 @@
 
 /* A routine to check if a file descriptor can be select()-ed. */
 #ifdef HAVE_SELECT
- #define _PyIsSelectable_fd(FD) (((FD) >= 0) && ((FD) < FD_SETSIZE))
+ #define _PyIsSelectable_fd(FD) ((unsigned int)(FD) < (unsigned int)FD_SETSIZE)
 #else
  #define _PyIsSelectable_fd(FD) (1)
 #endif /* HAVE_SELECT */