hash: factor, and guard against misbehaving hasher function

[gnulib.git] / ChangeLog

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+2010-08-31  Eric Blake  <eblake@redhat.com>
+       and Jim Meyering  <meyering@redhat.com>
+
+       hash: factor, and guard against misbehaving hasher function
+       * lib/hash.c (safe_hasher): New function, to encapsulate the checking
+       of table->hasher's return value.  Also protect against a hash value
+       so large that adding it to table->bucket results in a NULL pointer.
+       (hash_lookup, hash_get_next, hash_find_entry, transfer_entries):
+       Use it in place of open-coded check-and-abort.
+
 2010-08-30  Bruno Haible  <bruno@clisp.org>
 
        hash: silence spurious clang warning