Prepare for radical source tree reorganization. zack/build-layout-experiment

All top-level files and directories are moved into a temporary storage
directory, REORG.TODO, except for files that will certainly still
exist in their current form at top level when we're done (COPYING,
COPYING.LIB, LICENSES, NEWS, README), all old ChangeLog files (which
are moved to the new directory OldChangeLogs, instead), and the
generated file INSTALL (which is just deleted; in the new order, there
will be no generated files checked into version control).

1 files changed, 92 insertions, 0 deletions

diff --git a/REORG.TODO/misc/regexp.c b/REORG.TODO/misc/regexp.c
new file mode 100644
index 0000000000..19d76c0c37
--- /dev/null
+++ b/REORG.TODO/misc/regexp.c
@@ -0,0 +1,92 @@
+/* Compatibility symbols for the obsolete <regexp.h> interface.
+   Copyright (C) 1996-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+/* regexp.h now contains only an #error directive, so it cannot be
+   used in this file.
+
+   The function that would produce an 'expbuf' to use as the second
+   argument to 'step' and 'advance' was defined only in regexp.h,
+   as its definition depended on macros defined by the user.  */
+
+#include <regex.h>
+#include <shlib-compat.h>
+
+#if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_23)
+
+/* Define the variables used for the interface.  */
+char *loc1;
+char *loc2;
+compat_symbol (libc, loc1, loc1, GLIBC_2_0);
+compat_symbol (libc, loc2, loc2, GLIBC_2_0);
+
+/* Although we do not support the use we define this variable as well.  */
+char *locs;
+compat_symbol (libc, locs, locs, GLIBC_2_0);
+
+
+/* Find the next match in STRING.  The compiled regular expression is
+   found in the buffer starting at EXPBUF.  `loc1' will return the
+   first character matched and `loc2' points to the next unmatched
+   character.  */
+int
+weak_function attribute_compat_text_section
+step (const char *string, const char *expbuf)
+{
+  regmatch_t match;	/* We only need info about the full match.  */
+
+  expbuf += __alignof (regex_t *);
+  expbuf -= (expbuf - ((const char *) 0)) % __alignof__ (regex_t *);
+
+  if (__regexec ((const regex_t *) expbuf, string, 1, &match, REG_NOTEOL)
+      == REG_NOMATCH)
+    return 0;
+
+  loc1 = (char *) string + match.rm_so;
+  loc2 = (char *) string + match.rm_eo;
+  return 1;
+}
+compat_symbol (libc, step, step, GLIBC_2_0);
+
+
+/* Match the beginning of STRING with the compiled regular expression
+   in EXPBUF.  If the match is successful `loc2' will contain the
+   position of the first unmatched character.  */
+int
+weak_function attribute_compat_text_section
+advance (const char *string, const char *expbuf)
+{
+  regmatch_t match;	/* We only need info about the full match.  */
+
+  expbuf += __alignof__ (regex_t *);
+  expbuf -= (expbuf - ((const char *) 0)) % __alignof__ (regex_t *);
+
+  if (__regexec ((const regex_t *) expbuf, string, 1, &match, REG_NOTEOL)
+      == REG_NOMATCH
+      /* We have to check whether the check is at the beginning of the
+	 buffer.  */
+      || match.rm_so != 0)
+    return 0;
+
+  loc2 = (char *) string + match.rm_eo;
+  return 1;
+}
+compat_symbol (libc, advance, advance, GLIBC_2_0);
+
+
+#endif /* SHLIB_COMPAT (2.0, 2.23) */