re PR java/24120 (jc1 incorrectly uses libiberty hashes)

	PR java/24120:
	* jcf-io.c (memoized_dirlist_hash): New function.
	(caching_stat): Use it.

From-SVN: r104809

gcc/java/ChangeLog

+2005-09-29  Tom Tromey  <tromey@redhat.com>
+
+	PR java/24120:
+	* jcf-io.c (memoized_dirlist_hash): New function.
+	(caching_stat): Use it.
+
 2005-09-21  Ranjit Mathew  <rmathew@gcc.gnu.org>
 
 	PR java/21418

gcc/java/jcf-io.c

@@ -311,6 +311,14 @@ typedef struct memoized_dirlist_entry
   struct dirent **files;
 } memoized_dirlist_entry;
 
+/* A hash function for a memoized_dirlist_entry.  */
+static hashval_t
+memoized_dirlist_hash (const void *entry)
+{
+  const memoized_dirlist_entry *mde = (const memoized_dirlist_entry *) entry;
+  return htab_hash_string (mde->dir);
+}
+
 /* Returns true if ENTRY (a memoized_dirlist_entry *) corresponds to
    the directory given by KEY (a char *) giving the directory 
    name.  */
@@ -341,11 +349,12 @@ caching_stat (char *filename, struct stat *buf)
   char *base;
   memoized_dirlist_entry *dent;
   void **slot;
+  struct memoized_dirlist_entry temp;
   
   /* If the hashtable has not already been created, create it now.  */
   if (!memoized_dirlists)
     memoized_dirlists = htab_create (37,
-				     htab_hash_string,
+				     memoized_dirlist_hash,
 				     memoized_dirlist_lookup_eq,
 				     NULL);
 
@@ -364,8 +373,13 @@ caching_stat (char *filename, struct stat *buf)
   else
     base = filename;
 
-  /* Obtain the entry for this directory from the hash table.  */
-  slot = htab_find_slot (memoized_dirlists, filename, INSERT);
+  /* Obtain the entry for this directory from the hash table.  This
+     approach is ok since we know that the hash function only looks at
+     the directory name.  */
+  temp.dir = filename;
+  temp.num_files = 0;
+  temp.files = NULL;
+  slot = htab_find_slot (memoized_dirlists, &temp, INSERT);
   if (!*slot)
     {
       /* We have not already scanned this directory; scan it now.  */