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, 10 insertions, 25 deletions

diff --git a/lib/regcomp.c b/lib/regcomp.c
index 892139a02af..ad6f931a5c3 100644
--- a/lib/regcomp.c
+++ b/lib/regcomp.c
@@ -1436,7 +1436,7 @@ link_nfa_nodes (void *extra, bin_tree_t *node)
       break;
 
     case END_OF_RE:
-      assert (node->next == NULL);
+      DEBUG_ASSERT (node->next == NULL);
       break;
 
     case OP_DUP_ASTERISK:
@@ -1452,8 +1452,8 @@ link_nfa_nodes (void *extra, bin_tree_t *node)
 	  right = node->right->first->node_idx;
 	else
 	  right = node->next->node_idx;
-	assert (left > -1);
-	assert (right > -1);
+	DEBUG_ASSERT (left > -1);
+	DEBUG_ASSERT (right > -1);
 	err = re_node_set_init_2 (dfa->edests + idx, left, right);
       }
       break;
@@ -1471,7 +1471,7 @@ link_nfa_nodes (void *extra, bin_tree_t *node)
       break;
 
     default:
-      assert (!IS_EPSILON_NODE (node->token.type));
+      DEBUG_ASSERT (!IS_EPSILON_NODE (node->token.type));
       dfa->nexts[idx] = node->next->node_idx;
       break;
     }
@@ -1653,9 +1653,7 @@ calc_eclosure (re_dfa_t *dfa)
 {
   Idx node_idx;
   bool incomplete;
-#ifdef DEBUG
-  assert (dfa->nodes_len > 0);
-#endif
+  DEBUG_ASSERT (dfa->nodes_len > 0);
   incomplete = false;
   /* For each nodes, calculate epsilon closure.  */
   for (node_idx = 0; ; ++node_idx)
@@ -1670,9 +1668,7 @@ calc_eclosure (re_dfa_t *dfa)
 	  node_idx = 0;
 	}
 
-#ifdef DEBUG
-      assert (dfa->eclosures[node_idx].nelem != -1);
-#endif
+      DEBUG_ASSERT (dfa->eclosures[node_idx].nelem != -1);
 
       /* If we have already calculated, skip it.  */
       if (dfa->eclosures[node_idx].nelem != 0)
@@ -2442,9 +2438,7 @@ parse_expression (re_string_t *regexp, regex_t *preg, re_token_t *token,
 
     default:
       /* Must not happen?  */
-#ifdef DEBUG
-      assert (0);
-#endif
+      DEBUG_ASSERT (false);
       return NULL;
     }
   fetch_token (token, regexp, syntax);
@@ -3306,7 +3300,7 @@ parse_bracket_exp (re_string_t *regexp, re_dfa_t *dfa, re_token_t *token,
 	       goto parse_bracket_exp_free_return;
 	      break;
 	    default:
-	      assert (0);
+	      DEBUG_ASSERT (false);
 	      break;
 	    }
 	}
@@ -3662,7 +3656,6 @@ build_charclass_op (re_dfa_t *dfa, RE_TRANSLATE_TYPE trans,
   Idx alloc = 0;
 #endif /* not RE_ENABLE_I18N */
   reg_errcode_t ret;
-  re_token_t br_token;
   bin_tree_t *tree;
 
   sbcset = (re_bitset_ptr_t) calloc (sizeof (bitset_t), 1);
@@ -3713,11 +3706,7 @@ build_charclass_op (re_dfa_t *dfa, RE_TRANSLATE_TYPE trans,
 #endif
 
   /* Build a tree for simple bracket.  */
-#if defined GCC_LINT || defined lint
-  memset (&br_token, 0, sizeof br_token);
-#endif
-  br_token.type = SIMPLE_BRACKET;
-  br_token.opr.sbcset = sbcset;
+  re_token_t br_token = { .type = SIMPLE_BRACKET, .opr.sbcset = sbcset };
   tree = create_token_tree (dfa, NULL, NULL, &br_token);
   if (__glibc_unlikely (tree == NULL))
     goto build_word_op_espace;
@@ -3808,11 +3797,7 @@ static bin_tree_t *
 create_tree (re_dfa_t *dfa, bin_tree_t *left, bin_tree_t *right,
 	     re_token_type_t type)
 {
-  re_token_t t;
-#if defined GCC_LINT || defined lint
-  memset (&t, 0, sizeof t);
-#endif
-  t.type = type;
+  re_token_t t = { .type = type };
   return create_token_tree (dfa, left, right, &t);
 }