gdb/

	* dwarf2read.c (file_file_name): New function with code from
	file_full_name.
	(file_full_name): Move most of the code to file_file_name.
	(macro_start_file): Rename variable full_name to file_name and use
	file_file_name for it.  Add comp_dir parameter to new_macro_table.
	* macrocmd.c (show_pp_source_pos): New variable fullname.  Replace any
	macro_source_file->filename access by macro_source_fullname call.
	* macroscope.c (_initialize_macroscope): Update the new_macro_table
	caller.
	* macrotab.c (struct macro_table): New field comp_dir.
	(macro_include): New variables link_fullname and source_fullname.
	Replace any macro_source_file->filename access by macro_source_fullname
	call.
	(macro_lookup_inclusion): Remove the partial filenames checking code.
	(check_for_redefinition): New variables source_fullname and
	found_key_fullname.  Replace any macro_source_file->filename access by
	macro_source_fullname call.
	(macro_undef): New variables source_fullname and key_fullname.  Replace
	any macro_source_file->filename access by macro_source_fullname call.
	(macro_lookup_definition): New variables retval and source_fullname.
	Replace any macro_source_file->filename access by macro_source_fullname
	call.
	(foreach_macro): New variable key_fullname.  Replace any
	macro_source_file->filename access by macro_source_fullname call.
	(foreach_macro_in_scope): New variable datum_fullname.  Replace any
	macro_source_file->filename access by macro_source_fullname call.
	(new_macro_table): Add parameter comp_dir.  Initialize T with it.
	(macro_source_fullname): New function.
	* macrotab.h (struct macro_source_file): Extent the filename field
	comment.
	(new_macro_table): New parameter comp_dir, add a comment for it.
	(macro_source_fullname): new declaration.

gdb/testsuite/
	* gdb.linespec/base/one/header.h: New file.
	* gdb.linespec/base/two/header.h: New file.
	* gdb.linespec/macro-relative.c: New file.
	* gdb.linespec/macro-relative.exp: New file.

1 files changed, 66 insertions, 32 deletions

diff --git a/gdb/macrotab.c b/gdb/macrotab.c
index 31ca830..2e5592b 100644
--- a/gdb/macrotab.c
+++ b/gdb/macrotab.c
@@ -48,6 +48,10 @@ struct macro_table
      #inclusion tree; everything else is #included from here.  */
   struct macro_source_file *main_source;
 
+  /* Compilation directory for all files of this macro table.  It is allocated
+     on objfile's obstack.  */
+  const char *comp_dir;
+
   /* True if macros in this table can be redefined without issuing an
      error.  */
   int redef_ok;
@@ -463,6 +467,8 @@ macro_include (struct macro_source_file *source,
      the new one?  */
   if (*link && line == (*link)->included_at_line)
     {
+      char *link_fullname, *source_fullname;
+
       /* This means the compiler is emitting bogus debug info.  (GCC
          circa March 2002 did this.)  It also means that the splay
          tree ordering function, macro_tree_compare, will abort,
@@ -470,9 +476,14 @@ macro_include (struct macro_source_file *source,
          should tolerate bad debug info.  So:
 
          First, squawk.  */
+
+      link_fullname = macro_source_fullname (*link);
+      source_fullname = macro_source_fullname (source);
       complaint (&symfile_complaints,
 		 _("both `%s' and `%s' allegedly #included at %s:%d"),
-		 included, (*link)->filename, source->filename, line);
+		 included, link_fullname, source_fullname, line);
+      xfree (source_fullname);
+      xfree (link_fullname);
 
       /* Now, choose a new, unoccupied line number for this
          #inclusion, after the alleged #inclusion line.  */
@@ -504,22 +515,6 @@ macro_lookup_inclusion (struct macro_source_file *source, const char *name)
   if (filename_cmp (name, source->filename) == 0)
     return source;
 
-  /* The filename in the source structure is probably a full path, but
-     NAME could be just the final component of the name.  */
-  {
-    int name_len = strlen (name);
-    int src_name_len = strlen (source->filename);
-
-    /* We do mean < here, and not <=; if the lengths are the same,
-       then the filename_cmp above should have triggered, and we need to
-       check for a slash here.  */
-    if (name_len < src_name_len
-        && IS_DIR_SEPARATOR (source->filename[src_name_len - name_len - 1])
-        && filename_cmp (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;
@@ -730,11 +725,17 @@ check_for_redefinition (struct macro_source_file *source, int line,
 
       if (! same)
         {
+	  char *source_fullname, *found_key_fullname;
+	  
+	  source_fullname = macro_source_fullname (source);
+	  found_key_fullname = macro_source_fullname (found_key->start_file);
 	  complaint (&symfile_complaints,
 		     _("macro `%s' redefined at %s:%d; "
 		       "original definition at %s:%d"),
-		     name, source->filename, line,
-		     found_key->start_file->filename, found_key->start_line);
+		     name, source_fullname, line, found_key_fullname,
+		     found_key->start_line);
+	  xfree (found_key_fullname);
+	  xfree (source_fullname);
         }
 
       return found_key;
@@ -853,12 +854,17 @@ macro_undef (struct macro_source_file *source, int line,
              #definition.  */
           if (key->end_file)
             {
+	      char *source_fullname, *key_fullname;
+
+	      source_fullname = macro_source_fullname (source);
+	      key_fullname = macro_source_fullname (key->end_file);
               complaint (&symfile_complaints,
                          _("macro '%s' is #undefined twice,"
                            " at %s:%d and %s:%d"),
-                         name,
-                         source->filename, line,
-                         key->end_file->filename, key->end_line);
+			 name, source_fullname, line, key_fullname,
+			 key->end_line);
+	      xfree (key_fullname);
+	      xfree (source_fullname);
             }
 
           /* Whether or not we've seen a prior #undefinition, wipe out
@@ -918,8 +924,16 @@ macro_lookup_definition (struct macro_source_file *source,
   splay_tree_node n = find_definition (name, source, line);
 
   if (n)
-    return fixup_definition (source->filename, line,
-			     (struct macro_definition *) n->value);
+    {
+      struct macro_definition *retval;
+      char *source_fullname;
+
+      source_fullname = macro_source_fullname (source);
+      retval = fixup_definition (source_fullname, line,
+				 (struct macro_definition *) n->value);
+      xfree (source_fullname);
+      return retval;
+    }
   else
     return 0;
 }
@@ -962,9 +976,13 @@ foreach_macro (splay_tree_node node, void *arg)
 {
   struct macro_for_each_data *datum = (struct macro_for_each_data *) arg;
   struct macro_key *key = (struct macro_key *) node->key;
-  struct macro_definition *def
-    = fixup_definition (key->start_file->filename, key->start_line,
-			(struct macro_definition *) node->value);
+  struct macro_definition *def;
+  char *key_fullname;
+
+  key_fullname = macro_source_fullname (key->start_file);
+  def = fixup_definition (key_fullname, key->start_line,
+			  (struct macro_definition *) node->value);
+  xfree (key_fullname);
 
   (*datum->fn) (key->name, def, key->start_file, key->start_line,
 		datum->user_data);
@@ -990,9 +1008,13 @@ foreach_macro_in_scope (splay_tree_node node, void *info)
 {
   struct macro_for_each_data *datum = (struct macro_for_each_data *) info;
   struct macro_key *key = (struct macro_key *) node->key;
-  struct macro_definition *def
-    = fixup_definition (datum->file->filename, datum->line,
-			(struct macro_definition *) node->value);
+  struct macro_definition *def;
+  char *datum_fullname;
+
+  datum_fullname = macro_source_fullname (datum->file);
+  def = fixup_definition (datum_fullname, datum->line,
+			  (struct macro_definition *) node->value);
+  xfree (datum_fullname);
 
   /* See if this macro is defined before the passed-in line, and
      extends past that line.  */
@@ -1027,8 +1049,8 @@ macro_for_each_in_scope (struct macro_source_file *file, int line,
 
 
 struct macro_table *
-new_macro_table (struct obstack *obstack,
-                 struct bcache *b)
+new_macro_table (struct obstack *obstack, struct bcache *b,
+		 const char *comp_dir)
 {
   struct macro_table *t;
 
@@ -1042,6 +1064,7 @@ new_macro_table (struct obstack *obstack,
   t->obstack = obstack;
   t->bcache = b;
   t->main_source = NULL;
+  t->comp_dir = comp_dir;
   t->redef_ok = 0;
   t->definitions = (splay_tree_new_with_allocator
                     (macro_tree_compare,
@@ -1064,3 +1087,14 @@ free_macro_table (struct macro_table *table)
   /* Free the table of macro definitions.  */
   splay_tree_delete (table->definitions);
 }
+
+/* See macrotab.h for the comment.  */
+
+char *
+macro_source_fullname (struct macro_source_file *file)
+{
+  if (file->table->comp_dir == NULL || IS_ABSOLUTE_PATH (file->filename))
+    return xstrdup (file->filename);
+
+  return concat (file->table->comp_dir, SLASH_STRING, file->filename, NULL);
+}