Update from Gnulib

This incorporates:
2019-10-11 Simplify and regularize regex use of ‘assert’
2019-10-09 regex: omit debug assignment when not debugging
2019-10-09 regex: tell compiler there’s at most 256 arcs out
2019-10-09 regex: simplify by assuming C99
2019-10-09 regex: avoid copying of uninitialized storage
2019-09-29 fbufmode: Fix compilation error on glibc >= 2.28 systems
2019-09-28 Update comments that refer to POSIX
2019-09-23 Update URLs and associated text
* doc/misc/texinfo.tex, lib/open.c, lib/regcomp.c:
* lib/regex_internal.c, lib/regex_internal.h, lib/regexec.c:
* lib/stdio-impl.h:
Copy from Gnulib.

1 files changed, 4 insertions, 9 deletions

diff --git a/lib/regex_internal.c b/lib/regex_internal.c
index 0092cc2a468..4ade0df0b47 100644
--- a/lib/regex_internal.c
+++ b/lib/regex_internal.c
@@ -212,7 +212,7 @@ build_wcs_buffer (re_string_t *pstr)
 {
 #ifdef _LIBC
   unsigned char buf[MB_LEN_MAX];
-  assert (MB_LEN_MAX >= pstr->mb_cur_max);
+  DEBUG_ASSERT (MB_LEN_MAX >= pstr->mb_cur_max);
 #else
   unsigned char buf[64];
 #endif
@@ -285,7 +285,7 @@ build_wcs_upper_buffer (re_string_t *pstr)
   size_t mbclen;
 #ifdef _LIBC
   char buf[MB_LEN_MAX];
-  assert (MB_LEN_MAX >= pstr->mb_cur_max);
+  DEBUG_ASSERT (pstr->mb_cur_max <= MB_LEN_MAX);
 #else
   char buf[64];
 #endif
@@ -685,9 +685,7 @@ re_string_reconstruct (re_string_t *pstr, Idx idx, int eflags)
                          pstr->valid_len - offset);
               pstr->valid_len -= offset;
               pstr->valid_raw_len -= offset;
-#if defined DEBUG && DEBUG
-              assert (pstr->valid_len > 0);
-#endif
+              DEBUG_ASSERT (pstr->valid_len > 0);
             }
         }
       else
@@ -941,10 +939,7 @@ re_string_context_at (const re_string_t *input, Idx idx, int eflags)
       Idx wc_idx = idx;
       while(input->wcs[wc_idx] == WEOF)
         {
-#if defined DEBUG && DEBUG
-          /* It must not happen.  */
-          assert (wc_idx >= 0);
-#endif
+          DEBUG_ASSERT (wc_idx >= 0);
           --wc_idx;
           if (wc_idx < 0)
             return input->tip_context;