texlive[59913] Build/source/texk/chktex: chktex/regex: sync with

[commits+hironobu at tug.org]

Revision: 59913
          http://tug.org/svn/texlive?view=revision&revision=59913
Author:   hironobu
Date:     2021-07-13 12:52:31 +0200 (Tue, 13 Jul 2021)
Log Message:
-----------
chktex/regex: sync with pdftexdir/regex

Modified Paths:
--------------
    trunk/Build/source/texk/chktex/ChangeLog
    trunk/Build/source/texk/chktex/regex/regex_internal.h

Modified: trunk/Build/source/texk/chktex/ChangeLog
===================================================================
--- trunk/Build/source/texk/chktex/ChangeLog	2021-07-12 23:49:12 UTC (rev 59912)
+++ trunk/Build/source/texk/chktex/ChangeLog	2021-07-13 10:52:31 UTC (rev 59913)
@@ -1,3 +1,7 @@
+2021-07-13  Hironobu Yamashita  <h.y.acetaminophen at gmail.com>
+
+	* regex/regex_internal.h: sync with pdftexdir/regex 2017-02-16.
+
 2017-03-27  Karl Berry  <karl at freefriends.org>
 
 	* Makefile.am (AM_TESTS_ENVIRONMENT): use instead of TESTS_ENVIRONMENT.

Modified: trunk/Build/source/texk/chktex/regex/regex_internal.h
===================================================================
--- trunk/Build/source/texk/chktex/regex/regex_internal.h	2021-07-12 23:49:12 UTC (rev 59912)
+++ trunk/Build/source/texk/chktex/regex/regex_internal.h	2021-07-13 10:52:31 UTC (rev 59913)
@@ -1,4 +1,5 @@
 /* Extended regular expression matching and search library.
+   Copyright (C) 2017 Karl Berry <tex-live at tug.org>
    Copyright (C) 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Isamu Hasegawa <isamu at yamato.ibm.com>.
@@ -420,6 +421,7 @@
 #define re_string_skip_bytes(pstr,idx) ((pstr)->cur_idx += (idx))
 #define re_string_set_index(pstr,idx) ((pstr)->cur_idx = (idx))
 
+#ifndef alloca /* if alloca is already defined, fine */
 #ifdef __GNUC__
 # define alloca(size)   __builtin_alloca (size)
 # define HAVE_ALLOCA 1
@@ -430,6 +432,7 @@
 #else
 # error No alloca()
 #endif
+#endif /* not alloca */
 
 #ifndef _LIBC
 # if HAVE_ALLOCA