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authorPaul Pluzhnikov <ppluzhnikov@google.com>2012-06-13 09:57:18 -0700
committerPaul Eggert <eggert@cs.ucla.edu>2012-06-13 09:57:18 -0700
commitceb9e56b3d1f8c1922e0526c2e841373843460e2 (patch)
treed4e8a467540d705187cd5015cbdfd8356133b4ff /misc
parentddb28975144a7fd620ac2cae6fa219f73bd9e790 (diff)
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Suppress sign-conversion warning from FD_SET.
[BZ #14210] See <http://sourceware.org/ml/libc-alpha/2012-05/msg01794.html>. * debug/fdelt_chk.c (__fdelt_chk): Accept and return long int, not unsigned long int. * misc/bits/select2.h (__fdelt_chk, __fdelt_warn, __FD_ELT): Likewise.
Diffstat (limited to 'misc')
-rw-r--r--misc/bits/select2.h13
1 files changed, 7 insertions, 6 deletions
diff --git a/misc/bits/select2.h b/misc/bits/select2.h
index 9679925..76ae368 100644
--- a/misc/bits/select2.h
+++ b/misc/bits/select2.h
@@ -1,5 +1,5 @@
/* Checking macros for select functions.
- Copyright (C) 2011 Free Software Foundation, Inc.
+ Copyright (C) 2011, 2012 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@@ -21,14 +21,15 @@
#endif
/* Helper functions to issue warnings and errors when needed. */
-extern unsigned long int __fdelt_chk (unsigned long int __d);
-extern unsigned long int __fdelt_warn (unsigned long int __d)
+extern long int __fdelt_chk (long int __d);
+extern long int __fdelt_warn (long int __d)
__warnattr ("bit outside of fd_set selected");
#undef __FD_ELT
#define __FD_ELT(d) \
__extension__ \
- ({ unsigned long int __d = (d); \
+ ({ long int __d = (d); \
(__builtin_constant_p (__d) \
- ? (__d >= __FD_SETSIZE \
- ? __fdelt_warn (__d) : (__d / __NFDBITS)) \
+ ? (0 <= __d && __d < __FD_SETSIZE \
+ ? (__d / __NFDBITS) \
+ : __fdelt_warn (__d)) \
: __fdelt_chk (__d)); })