build: avoid some warnings

* gl/lib/mbsalign.c (mbsalign): Mark unused parameter.
* bootstrap.conf (gnulib_modules): Remove obsolete
rename-dest-slash.
* gnulib-tests/Makefile.am (AM_CFLAGS): Reduce set of warnings for
gnulib tests.
* gl/modules/rename-tests.diff (Makefile.am): New file, to add
LIBINTL to LDADD, since we avoid canonicalize-lgpl module.
* gl/lib/regcomp.c.diff (regerror, calc_next)
(build_collating_symbol, parse_bracket_element, build_equiv_class)
(free_tree): Mark unused parameters.
* gl/lib/regex_internal.h.diff (re_string_elem_size_at): New file,
to mark unused parameters.
* gl/lib/printf-args.c.diff (PRINTF_FETCHARGS): New file, to avoid
type mismatch.
* gl/lib/vasnprintf.c (VASNPRINTF): New file, to avoid shadowing
local variable name.
* .gitignore: Ignore temporary build artifacts.

1 files changed, 120 insertions, 0 deletions

diff --git a/gl/lib/vasnprintf.c.diff b/gl/lib/vasnprintf.c.diff
new file mode 100644
index 000000000..eb48ab070
--- /dev/null
+++ b/gl/lib/vasnprintf.c.diff
@@ -0,0 +1,120 @@
+diff --git a/lib/vasnprintf.c b/lib/vasnprintf.c
+index 661445c..ab66288 100644
+--- a/lib/vasnprintf.c
++++ b/lib/vasnprintf.c
+@@ -2375,16 +2375,16 @@ VASNPRINTF (DCHAR_T *resultbuf, size_t *lengthp,
+ 		      characters = 0;
+ 		      while (precision > 0)
+ 			{
+-			  char buf[64]; /* Assume MB_CUR_MAX <= 64.  */
++			  char cbuf[64]; /* Assume MB_CUR_MAX <= 64.  */
+ 			  int count;
+
+ 			  if (*arg_end == 0)
+ 			    /* Found the terminating null wide character.  */
+ 			    break;
+ #  if HAVE_WCRTOMB
+-			  count = wcrtomb (buf, *arg_end, &state);
++			  count = wcrtomb (cbuf, *arg_end, &state);
+ #  else
+-			  count = wctomb (buf, *arg_end);
++			  count = wctomb (cbuf, *arg_end);
+ #  endif
+ 			  if (count < 0)
+ 			    {
+@@ -2420,16 +2420,16 @@ VASNPRINTF (DCHAR_T *resultbuf, size_t *lengthp,
+ 		      characters = 0;
+ 		      for (;;)
+ 			{
+-			  char buf[64]; /* Assume MB_CUR_MAX <= 64.  */
++			  char cbuf[64]; /* Assume MB_CUR_MAX <= 64.  */
+ 			  int count;
+
+ 			  if (*arg_end == 0)
+ 			    /* Found the terminating null wide character.  */
+ 			    break;
+ #  if HAVE_WCRTOMB
+-			  count = wcrtomb (buf, *arg_end, &state);
++			  count = wcrtomb (cbuf, *arg_end, &state);
+ #  else
+-			  count = wctomb (buf, *arg_end);
++			  count = wctomb (cbuf, *arg_end);
+ #  endif
+ 			  if (count < 0)
+ 			    {
+@@ -2470,20 +2470,20 @@ VASNPRINTF (DCHAR_T *resultbuf, size_t *lengthp,
+ #   endif
+ 		    for (remaining = characters; remaining > 0; )
+ 		      {
+-			char buf[64]; /* Assume MB_CUR_MAX <= 64.  */
++			char cbuf[64]; /* Assume MB_CUR_MAX <= 64.  */
+ 			int count;
+
+ 			if (*arg == 0)
+ 			  abort ();
+ #   if HAVE_WCRTOMB
+-			count = wcrtomb (buf, *arg, &state);
++			count = wcrtomb (cbuf, *arg, &state);
+ #   else
+-			count = wctomb (buf, *arg);
++			count = wctomb (cbuf, *arg);
+ #   endif
+ 			if (count <= 0)
+ 			  /* Inconsistency.  */
+ 			  abort ();
+-			memcpy (tmpptr, buf, count);
++			memcpy (tmpptr, cbuf, count);
+ 			tmpptr += count;
+ 			arg++;
+ 			remaining -= count;
+@@ -2552,20 +2552,20 @@ VASNPRINTF (DCHAR_T *resultbuf, size_t *lengthp,
+ 		      ENSURE_ALLOCATION (xsum (length, characters));
+ 		      for (remaining = characters; remaining > 0; )
+ 			{
+-			  char buf[64]; /* Assume MB_CUR_MAX <= 64.  */
++			  char cbuf[64]; /* Assume MB_CUR_MAX <= 64.  */
+ 			  int count;
+
+ 			  if (*arg == 0)
+ 			    abort ();
+ #   if HAVE_WCRTOMB
+-			  count = wcrtomb (buf, *arg, &state);
++			  count = wcrtomb (cbuf, *arg, &state);
+ #   else
+-			  count = wctomb (buf, *arg);
++			  count = wctomb (cbuf, *arg);
+ #   endif
+ 			  if (count <= 0)
+ 			    /* Inconsistency.  */
+ 			    abort ();
+-			  memcpy (result + length, buf, count);
++			  memcpy (result + length, cbuf, count);
+ 			  length += count;
+ 			  arg++;
+ 			  remaining -= count;
+@@ -2581,21 +2581,21 @@ VASNPRINTF (DCHAR_T *resultbuf, size_t *lengthp,
+ #   endif
+ 		      while (arg < arg_end)
+ 			{
+-			  char buf[64]; /* Assume MB_CUR_MAX <= 64.  */
++			  char cbuf[64]; /* Assume MB_CUR_MAX <= 64.  */
+ 			  int count;
+
+ 			  if (*arg == 0)
+ 			    abort ();
+ #   if HAVE_WCRTOMB
+-			  count = wcrtomb (buf, *arg, &state);
++			  count = wcrtomb (cbuf, *arg, &state);
+ #   else
+-			  count = wctomb (buf, *arg);
++			  count = wctomb (cbuf, *arg);
+ #   endif
+ 			  if (count <= 0)
+ 			    /* Inconsistency.  */
+ 			    abort ();
+ 			  ENSURE_ALLOCATION (xsum (length, count));
+-			  memcpy (result + length, buf, count);
++			  memcpy (result + length, cbuf, count);
+ 			  length += count;
+ 			  arg++;
+ 			}