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Merge from gnulib

Browse source 
This incorporates:
2015-10-18 stdalign: work around pre-4.9 GCC x86 bug
2015-10-18 time_rz: avoid warning from bleeding-edge gcc's -Wnonnull
* doc/misc/texinfo.tex, lib/stdalign.in.h, lib/time_rz.c:
Copy from gnulib.
This commit is contained in:
Paul Eggert 2015-10-21 20:10:40 -07:00
parent 2ab48bafa3
commit 0bb27cd32e
3 changed files with 96 additions and 64 deletions
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146
doc/misc/texinfo.tex
View file

@ -3,7 +3,7 @@
% Load plain if necessary, i.e., if running under initex.
\expandafter\ifx\csname fmtname\endcsname\relax\input plain\fi
%
\def\texinfoversion{2015-10-09.18}
\def\texinfoversion{2015-10-17.11}
%
% Copyright 1985, 1986, 1988, 1990, 1991, 1992, 1993, 1994, 1995,
% 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
@ -1106,6 +1106,7 @@
\newtoks\toksC
\newtoks\toksD
\newbox\boxA
\newbox\boxB
\newcount\countA
\newif\ifpdf
\newif\ifpdfmakepagedest
@ -4605,6 +4606,8 @@
}
% \commondummiesnofonts: common to \commondummies and \indexnofonts.
% Define \definedumyletter, \definedummyaccent and \definedummyword before
% using.
%
\def\commondummiesnofonts{%
% Control letters and accents.
@ -4700,11 +4703,27 @@
{
\catcode`\<=13
\catcode`\-=13
\catcode`\`=13
\gdef\indexnonalnumdisappear{%
\backslashdisappear
\def-{}%
\def<{}%
\def\@{}%
\expandafter\ifx\csname SETtxiindexlquoteignore\endcsname\relax\else
% @set txiindexlquoteignore makes us ignore left quotes in the sort term.
% (Introduced for FSFS 2nd ed.)
\let`=\empty
\fi
%
\expandafter\ifx\csname SETtxiindexbackslashignore\endcsname\relax\else
\backslashdisappear
\fi
%
\expandafter\ifx\csname SETtxiindexhyphenignore\endcsname\relax\else
\def-{}%
\fi
\expandafter\ifx\csname SETtxiindexlessthanignore\endcsname\relax\else
\def<{}%
\fi
\expandafter\ifx\csname SETtxiindexatsignignore\endcsname\relax\else
\def\@{}%
\fi
}
\gdef\indexnonalnumreappear{%
@ -4728,7 +4747,6 @@
\def\definedummyletter##1{\let##1\empty}%
% All control words become @asis by default; overrides below.
\let\definedummyword\definedummyaccent
%
\commondummiesnofonts
%
% Don't no-op \tt, since it isn't a user-level command
@ -4741,8 +4759,6 @@
\def\_{\normalunderscore}%
\def\-{}% @- shouldn't affect sorting
%
% Unfortunately, texindex < 6.0 is not prepared to handle braces in the
% content at all, so these won't be sorted in ASCII order.
\def\lbracechar{{\indexlbrace}}%
\def\rbracechar{{\indexrbrace}}%
\let\{=\lbracechar
@ -4805,9 +4821,6 @@
\def\result{=>}%
\def\textdegree{o}%
%
\expandafter\ifx\csname SETtxiindexlquoteignore\endcsname\relax
\else \indexlquoteignore \fi
%
% We need to get rid of all macros, leaving only the arguments (if present).
% Of course this is not nearly correct, but it is the best we can do for now.
% makeinfo does not expand macros in the argument to @deffn, which ends up
@ -4821,10 +4834,6 @@
\macrolist
}
% Undocumented (for FSFS 2nd ed.): @set txiindexlquoteignore makes us
% ignore left quotes in the sort term.
{\catcode`\`=\active
\gdef\indexlquoteignore{\let`=\empty}}
\let\SETmarginindex=\relax % put index entries in margin (undocumented)?
@ -4917,9 +4926,9 @@
% Get the string to sort by, by processing the index entry with all
% font commands turned off.
{\indexnofonts
\indexnonalnumdisappear
\xdef\indexsortkey{}%
\let\sortas=\indexwritesortas
\indexnonalnumdisappear
\edef\temp{\the\toks0}%
\setbox\dummybox = \hbox{\temp}% Make sure to execute any \sortas
\ifx\indexsortkey\empty
@ -5214,30 +5223,6 @@
% How much \indexdotfill is stretched, or how much \parfillskip is shrunk
% Number of lines (\linepenalty)
%
% Do not prefer a separate line ending with a hyphen to fewer lines.
\finalhyphendemerits = 0
%
% Word spacing - no stretch
\spaceskip=\fontdimen2\font minus \fontdimen4\font
%
\linepenalty=1000 % Discourage line breaks.
\hyphenpenalty=5000 % Discourage hyphenation.
%
% Ragged right margin, but not for the last line with the leaders in it.
% When an index entry spans lines, this stretch competes with the stretch
% in \indexdotfill to determine how the line will be split.
\rightskip=\entryrightmargin
\advance\rightskip by 0pt plus .6\hsize
%
% \parfillskip is at the end of the line with the page number
\parfillskip=0pt
% Cancel the \rightskip stretch
\advance \parfillskip by 0pt plus -.6\hsize
% Determine how far we can stretch into the margin.
% This allows, e.g., "Appendix H GNU Free Documentation License" to fit
% on one line.
\advance \parfillskip by 0pt minus .6\entryrightmargin
%
% Swallow the left brace of the text (first parameter):
\afterassignment\doentry
\let\temp =
@ -5245,20 +5230,26 @@
\def\entrybreak{\unskip\space\ignorespaces}%
\def\doentry{%
% Save the text of the entry in a \vtop.
\global\setbox\entryindexbox=\vtop\bgroup
\global\setbox\boxA=\hbox\bgroup
\bgroup % Instead of the swallowed brace.
\noindent
\aftergroup\finishentry
% And now comes the text of the entry.
% Not absorbing as a macro argument reduces the chance of problems
% with catcodes occurring.
}
\def\finishentry#1{%
{\catcode`\@=11
\gdef\finishentry#1{%
\egroup % end box A
\dimen@ = \wd\boxA % Length of text of entry
\global\setbox\boxA=\hbox\bgroup\unhbox\boxA
% #1 is the page number.
%
% The following is kludged to not output a line of dots in the index if
% there are no page numbers. The next person who breaks this will be
% cursed by a Unix daemon.
\setbox\boxA = \hbox{#1}%
\ifdim\wd\boxA = 0pt
\setbox\boxB = \hbox{#1}%
\ifdim\wd\boxB = 0pt
\null\nobreak\hfill\ %
\else
%
@ -5271,23 +5262,62 @@
\hskip\skip\thinshrinkable #1%
\fi
\fi
% Parameters for formatting this paragraph, reset for each paragraph.
\egroup % end \boxA
\global\setbox\entryindexbox=\vtop\bgroup\noindent
% We want the text of the entries to be aligned to the left, and the
% page numbers to be aligned to the right.
%
% \hangindent is only relevant when the entry text and page number
% don't both fit on one line. In that case, bob suggests starting the
% dots pretty far over on the line. Unfortunately, a large
% indentation looks wrong when the entry text itself is broken across
% lines. So we use a small indentation and put up with long leaders.
\advance\leftskip by 0pt plus 1fil
\advance\leftskip by 0pt plus -1fill
\rightskip = 0pt plus -1fil
\advance\rightskip by 0pt plus 1fill
% Cause last line, which could consist of page numbers on their own if the
% list of page numbers is long, to be aligned to the right.
\parfillskip=0pt plus -1fill
%
\hangafter = 1
\hangindent = 1em
\par
\hangindent=1em
%
\advance\rightskip by \entryrightmargin
% Determine how far we can stretch into the margin.
% This allows, e.g., "Appendix H GNU Free Documentation License" to fit
% on one line.
\advance \parfillskip by 0pt minus .6\entryrightmargin
%
\ifdim\wd\boxA > \hsize % If the entry doesn't fit in one line
\ifdim\dimen@ > 0.9\hsize % due to long index text
\dimen@ = 0.6\dimen@ % Try to split the text roughly evenly
\dimen@ii = \hsize
\advance \dimen@ii by -1em
\ifnum\dimen@>\dimen@ii
% If the entry is too long, use the whole line
\dimen@ = \dimen@ii
\else
% Cause stretch of 1fill at the end of the first line, to avoid
% extra spacing in a short first line.
\hskip 0pt plus 1fill
\fi
\parshape = 2 0pt \dimen@ 1em \dimen@ii
% Ideally we'd add a finite glue at the end of the first line only, but
% TeX doesn't seem to provide a way to do such a thing.
\fi\fi
\unhbox\boxA
%
% Do not prefer a separate line ending with a hyphen to fewer lines.
\finalhyphendemerits = 0
%
% Word spacing - no stretch
\spaceskip=\fontdimen2\font minus \fontdimen4\font
%
\linepenalty=1000 % Discourage line breaks.
\hyphenpenalty=10000 % Discourage hyphenation.
%
\par % format the paragraph
\egroup % The \vtop
\endgroup
% delay text of entry until after penalty
\bgroup\aftergroup\insertindexentrybox
\entryorphanpenalty
}
}}
\newskip\thinshrinkable
\skip\thinshrinkable=.15em minus .15em
@ -5322,10 +5352,11 @@
}
% Like plain.tex's \dotfill, except uses up at least 1 em.
% Using a finite stretch encourages several words to appear on a second line
% if the entry is broken.
% The filll stretch here overpowers both the fil and fill stretch to push
% the page number to the right.
\def\indexdotfill{\cleaders
\hbox{$\mathsurround=0pt \mkern1.5mu.\mkern1.5mu$}\hskip 1em plus .4\hsize}
\hbox{$\mathsurround=0pt \mkern1.5mu.\mkern1.5mu$}\hskip 1em plus 1filll}
\def\primary #1{\line{#1\hfil}}
@ -8945,6 +8976,7 @@
\def\imagexxx#1,#2,#3,#4,#5,#6\finish{\begingroup
\catcode`\^^M = 5 % in case we're inside an example
\normalturnoffactive % allow _ et al. in names
\def\xprocessmacroarg{\eatspaces}% in case we are being used via a macro
% If the image is by itself, center it.
\ifvmode
\imagevmodetrue

5
lib/stdalign.in.h
View file

@ -52,7 +52,10 @@
#undef _Alignas
#undef _Alignof
#if !defined __STDC_VERSION__ || __STDC_VERSION__ < 201112
/* GCC releases before GCC 4.9 had a bug in _Alignof. See GCC bug 52023
<http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52023>. */
#if (!defined __STDC_VERSION__ || __STDC_VERSION__ < 201112 \
|| (defined __GNUC__ && __GNUC__ < 4 + (__GNUC_MINOR__ < 9)))
# ifdef __cplusplus
# if 201103 <= __cplusplus
# define _Alignof(type) alignof (type)

9
lib/time_rz.c
View file

@ -90,8 +90,7 @@ extend_abbrs (char *abbrs, char const *abbr, size_t abbr_size)
}
/* Return a newly allocated time zone for NAME, or NULL on failure.
As a special case, return a nonzero constant for wall clock time, a
constant that survives freeing. */
A null NAME stands for wall clock time (which is like unset TZ). */
timezone_t
tzalloc (char const *name)
{
@ -288,10 +287,8 @@ localtime_rz (timezone_t tz, time_t const *t, struct tm *tm)
timezone_t old_tz = set_tz (tz);
if (old_tz)
{
tm = localtime_r (t, tm);
if (tm && !save_abbr (tz, tm))
tm = NULL;
if (revert_tz (old_tz))
bool abbr_saved = localtime_r (t, tm) && save_abbr (tz, tm);
if (revert_tz (old_tz) && abbr_saved)
return tm;
}
return NULL;