* macroexp.c (init_buffer, gather_arguments, expand): Use NULL, not 0.

* macrotab.c (macro_lookup_inclusion, find_definition,
new_macro_table): Same.

* macroexp.c (currently_rescanning, expand): Use `strcmp () == 0',
not `! strcmp ()'.  This is a dubious improvement.
* macrotab.c (macro_lookup_inclusion, find_definition): Same.

* macrotab.c (macro_lookup_inclusion): Initialize `best_depth',
although it's not necessary, to avoid a warning.

gdb/ChangeLog

@@ -1,3 +1,16 @@
+2002-05-14  Jim Blandy  <jimb@redhat.com>
+
+	* macroexp.c (init_buffer, gather_arguments, expand): Use NULL, not 0.
+	* macrotab.c (macro_lookup_inclusion, find_definition,
+	new_macro_table): Same.
+	
+	* macroexp.c (currently_rescanning, expand): Use `strcmp () == 0',
+	not `! strcmp ()'.  This is a dubious improvement.
+	* macrotab.c (macro_lookup_inclusion, find_definition): Same.
+
+	* macrotab.c (macro_lookup_inclusion): Initialize `best_depth',
+	although it's not necessary, to avoid a warning.
+
 2002-05-14  Daniel Jacobowitz  <drow@mvista.com>
 
 	* gdbtypes.h: Update accessor macros to use TYPE_MAIN_TYPE.

gdb/macroexp.c

@@ -88,7 +88,7 @@ init_buffer (struct macro_buffer *b, int n)
   if (n > 0)
     b->text = (char *) xmalloc (n);
   else
-    b->text = 0;
+    b->text = NULL;
   b->len = 0;
   b->shared = 0;
   b->last_token = -1;
@@ -646,7 +646,7 @@ static int
 currently_rescanning (struct macro_name_list *list, const char *name)
 {
   for (; list; list = list->next)
-    if (! strcmp (name, list->name))
+    if (strcmp (name, list->name) == 0)
       return 1;
 
   return 0;
@@ -692,7 +692,7 @@ gather_arguments (const char *name, struct macro_buffer *src, int *argc_p)
 {
   struct macro_buffer tok;
   int args_len, args_size;
-  struct macro_buffer *args = 0;
+  struct macro_buffer *args = NULL;
   struct cleanup *back_to = make_cleanup (free_current_contents, &args);
 
   /* Does SRC start with an opening paren token?  Read from a copy of
@@ -928,12 +928,12 @@ expand (const char *id,
     {
       struct cleanup *back_to = make_cleanup (null_cleanup, 0);
       int argc;
-      struct macro_buffer *argv = 0;
+      struct macro_buffer *argv = NULL;
       struct macro_buffer substituted;
       struct macro_buffer substituted_src;
 
       if (def->argc >= 1
-          && ! strcmp (def->argv[def->argc - 1], "..."))
+          && strcmp (def->argv[def->argc - 1], "...") == 0)
         error ("Varargs macros not implemented yet.");
 
       make_cleanup (free_current_contents, &argv);

gdb/macrotab.c

@@ -479,7 +479,7 @@ struct macro_source_file *
 macro_lookup_inclusion (struct macro_source_file *source, const char *name)
 {
   /* Is SOURCE itself named NAME?  */
-  if (! strcmp (name, source->filename))
+  if (strcmp (name, source->filename) == 0)
     return source;
 
   /* The filename in the source structure is probably a full path, but
@@ -493,15 +493,15 @@ macro_lookup_inclusion (struct macro_source_file *source, const char *name)
        check for a slash here.  */
     if (name_len < src_name_len
         && source->filename[src_name_len - name_len - 1] == '/'
-        && ! strcmp (name, source->filename + src_name_len - name_len))
+        && strcmp (name, source->filename + src_name_len - name_len) == 0)
       return source;
   }
 
   /* It's not us.  Try all our children, and return the lowest.  */
   {
     struct macro_source_file *child;
-    struct macro_source_file *best = 0;
+    struct macro_source_file *best = NULL;
-    int best_depth;
+    int best_depth = 0;
 
     for (child = source->includes; child; child = child->next_included)
       {
@@ -618,7 +618,7 @@ find_definition (const char *name,
   query.name = name;
   query.start_file = file;
   query.start_line = line;
-  query.end_file = 0;
+  query.end_file = NULL;
 
   n = splay_tree_lookup (t->definitions, (splay_tree_key) &query);
   if (! n)
@@ -638,7 +638,7 @@ find_definition (const char *name,
              We just want to search within a given name's definitions.  */
           struct macro_key *found = (struct macro_key *) pred->key;
 
-          if (! strcmp (found->name, name))
+          if (strcmp (found->name, name) == 0)
             n = pred;
         }
     }
@@ -838,7 +838,7 @@ new_macro_table (struct obstack *obstack,
   memset (t, 0, sizeof (*t));
   t->obstack = obstack;
   t->bcache = b;
-  t->main_source = 0;
+  t->main_source = NULL;
   t->definitions = (splay_tree_new_with_allocator
                     (macro_tree_compare,
                      ((splay_tree_delete_key_fn) macro_tree_delete_key),