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[Emacs-diffs] emacs-26 04bc141 2/2: Merge from Gnulib
From: |
Paul Eggert |
Subject: |
[Emacs-diffs] emacs-26 04bc141 2/2: Merge from Gnulib |
Date: |
Thu, 2 Nov 2017 16:22:54 -0400 (EDT) |
branch: emacs-26
commit 04bc1410c26884bfed9fd7ba7376491023df03fc
Author: Paul Eggert <address@hidden>
Commit: Paul Eggert <address@hidden>
Merge from Gnulib
This incorporates:
2017-10-29 timespec: prefer ‘assume’ to ‘assure’
2017-10-27 timespec.h: use "assure" to avoid a spurious warning
2017-10-09 getopt-posix: Fix build failure if ac_cv_header_getopt_h=no
* build-aux/config.guess, build-aux/config.sub:
* lib/timespec.h, lib/unistd.in.h:
Copy from Gnulib.
---
build-aux/config.guess | 20 ++++++++++----------
build-aux/config.sub | 10 +++++-----
lib/timespec.h | 22 +++++++++++++++-------
lib/unistd.in.h | 5 ++---
4 files changed, 32 insertions(+), 25 deletions(-)
diff --git a/build-aux/config.guess b/build-aux/config.guess
index ba1c143..2773ac4 100755
--- a/build-aux/config.guess
+++ b/build-aux/config.guess
@@ -2,7 +2,7 @@
# Attempt to guess a canonical system name.
# Copyright 1992-2017 Free Software Foundation, Inc.
-timestamp='2017-09-26'
+timestamp='2017-11-01'
# This file is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by
@@ -479,13 +479,13 @@ case
"${UNAME_MACHINE}:${UNAME_SYSTEM}:${UNAME_RELEASE}:${UNAME_VERSION}" in
#endif
#if defined (host_mips) && defined (MIPSEB)
#if defined (SYSTYPE_SYSV)
- printf ("mips-mips-riscos%ssysv\n", argv[1]); exit (0);
+ printf ("mips-mips-risco0s%ssysv\\n", argv[1]); exit (0);
#endif
#if defined (SYSTYPE_SVR4)
- printf ("mips-mips-riscos%ssvr4\n", argv[1]); exit (0);
+ printf ("mips-mips-riscos%ssvr4\\n", argv[1]); exit (0);
#endif
#if defined (SYSTYPE_BSD43) || defined(SYSTYPE_BSD)
- printf ("mips-mips-riscos%sbsd\n", argv[1]); exit (0);
+ printf ("mips-mips-riscos%sbsd\\n", argv[1]); exit (0);
#endif
#endif
exit (-1);
@@ -608,7 +608,7 @@ EOF
*:AIX:*:*)
echo rs6000-ibm-aix
exit ;;
- ibmrt:4.4BSD:*|romp-ibm:BSD:*)
+ ibmrt:4.4BSD:*|romp-ibm:4.4BSD:*)
echo romp-ibm-bsd4.4
exit ;;
ibmrt:*BSD:*|romp-ibm:BSD:*) # covers RT/PC BSD and
@@ -629,8 +629,8 @@ EOF
9000/[34678]??:HP-UX:*:*)
HPUX_REV=`echo ${UNAME_RELEASE}|sed -e 's/[^.]*.[0B]*//'`
case "${UNAME_MACHINE}" in
- 9000/31? ) HP_ARCH=m68000 ;;
- 9000/[34]?? ) HP_ARCH=m68k ;;
+ 9000/31?) HP_ARCH=m68000 ;;
+ 9000/[34]??) HP_ARCH=m68k ;;
9000/[678][0-9][0-9])
if [ -x /usr/bin/getconf ]; then
sc_cpu_version=`/usr/bin/getconf SC_CPU_VERSION 2>/dev/null`
@@ -743,7 +743,7 @@ EOF
{ echo "$SYSTEM_NAME"; exit; }
echo unknown-hitachi-hiuxwe2
exit ;;
- 9000/7??:4.3bsd:*:* | 9000/8?[79]:4.3bsd:*:* )
+ 9000/7??:4.3bsd:*:* | 9000/8?[79]:4.3bsd:*:*)
echo hppa1.1-hp-bsd
exit ;;
9000/8??:4.3bsd:*:*)
@@ -752,7 +752,7 @@ EOF
*9??*:MPE/iX:*:* | *3000*:MPE/iX:*:*)
echo hppa1.0-hp-mpeix
exit ;;
- hp7??:OSF1:*:* | hp8?[79]:OSF1:*:* )
+ hp7??:OSF1:*:* | hp8?[79]:OSF1:*:*)
echo hppa1.1-hp-osf
exit ;;
hp8??:OSF1:*:*)
@@ -1072,7 +1072,7 @@ EOF
i*86:*DOS:*:*)
echo ${UNAME_MACHINE}-pc-msdosdjgpp
exit ;;
- i*86:*:4.*:* | i*86:SYSTEM_V:4.*:*)
+ i*86:*:4.*:*)
UNAME_REL=`echo ${UNAME_RELEASE} | sed 's/\/MP$//'`
if grep Novell /usr/include/link.h >/dev/null 2>/dev/null; then
echo ${UNAME_MACHINE}-univel-sysv${UNAME_REL}
diff --git a/build-aux/config.sub b/build-aux/config.sub
index c6950fd..bbad4c4 100755
--- a/build-aux/config.sub
+++ b/build-aux/config.sub
@@ -2,7 +2,7 @@
# Configuration validation subroutine script.
# Copyright 1992-2017 Free Software Foundation, Inc.
-timestamp='2017-09-26'
+timestamp='2017-11-01'
# This file is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by
@@ -640,7 +640,7 @@ case $basic_machine in
basic_machine=rs6000-bull
os=-bosx
;;
- dpx2* | dpx2*-bull)
+ dpx2*)
basic_machine=m68k-bull
os=-sysv3
;;
@@ -902,7 +902,7 @@ case $basic_machine in
basic_machine=v70-nec
os=-sysv
;;
- next | m*-next )
+ next | m*-next)
basic_machine=m68k-next
case $os in
-nextstep* )
@@ -1492,7 +1492,7 @@ case $os in
-nova*)
os=-rtmk-nova
;;
- -ns2 )
+ -ns2)
os=-nextstep2
;;
-nsk*)
@@ -1694,7 +1694,7 @@ case $basic_machine in
m88k-omron*)
os=-luna
;;
- *-next )
+ *-next)
os=-nextstep
;;
*-sequent)
diff --git a/lib/timespec.h b/lib/timespec.h
index 3831301..cc34067 100644
--- a/lib/timespec.h
+++ b/lib/timespec.h
@@ -33,6 +33,8 @@ _GL_INLINE_HEADER_BEGIN
extern "C" {
#endif
+#include "verify.h"
+
/* Resolution of timespec timestamps (in units per second), and log
base 10 of the resolution. */
@@ -67,23 +69,29 @@ make_timespec (time_t s, long int ns)
any platform of interest to the GNU project, since all such
platforms have 32-bit int or wider.
- Replacing "(int) (a.tv_nsec - b.tv_nsec)" with something like
+ Replacing "a.tv_nsec - b.tv_nsec" with something like
"a.tv_nsec < b.tv_nsec ? -1 : a.tv_nsec > b.tv_nsec" would cause
this function to work in some cases where the above assumption is
violated, but not in all cases (e.g., a.tv_sec==1, a.tv_nsec==-2,
b.tv_sec==0, b.tv_nsec==999999999) and is arguably not worth the
extra instructions. Using a subtraction has the advantage of
detecting some invalid cases on platforms that detect integer
- overflow.
-
- The (int) cast avoids a gcc -Wconversion warning. */
+ overflow. */
_GL_TIMESPEC_INLINE int _GL_ATTRIBUTE_PURE
timespec_cmp (struct timespec a, struct timespec b)
{
- return (a.tv_sec < b.tv_sec ? -1
- : a.tv_sec > b.tv_sec ? 1
- : (int) (a.tv_nsec - b.tv_nsec));
+ if (a.tv_sec < b.tv_sec)
+ return -1;
+ if (a.tv_sec > b.tv_sec)
+ return 1;
+
+ /* Pacify gcc -Wstrict-overflow (bleeding-edge circa 2017-10-02). See:
+ http://lists.gnu.org/archive/html/bug-gnulib/2017-10/msg00006.html */
+ assume (-1 <= a.tv_nsec && a.tv_nsec <= 2 * TIMESPEC_RESOLUTION);
+ assume (-1 <= b.tv_nsec && b.tv_nsec <= 2 * TIMESPEC_RESOLUTION);
+
+ return a.tv_nsec - b.tv_nsec;
}
/* Return -1, 0, 1, depending on the sign of A. A.tv_nsec must be
diff --git a/lib/unistd.in.h b/lib/unistd.in.h
index c1dd07f..ca8090a 100644
--- a/lib/unistd.in.h
+++ b/lib/unistd.in.h
@@ -134,9 +134,8 @@
/* The definition of _GL_WARN_ON_USE is copied here. */
-/* Get getopt(), optarg, optind, opterr, optopt.
- But avoid namespace pollution on glibc systems. */
-#if @GNULIB_UNISTD_H_GETOPT@ && !defined __GLIBC__ && !defined
_GL_SYSTEM_GETOPT
+/* Get getopt(), optarg, optind, opterr, optopt. */
+#if @GNULIB_UNISTD_H_GETOPT@ && !defined _GL_SYSTEM_GETOPT
# include <getopt-cdefs.h>
# include <getopt-pfx-core.h>
#endif