--- lib/regex_internal.h	2007-02-14 16:16:55.000000000 -0800
+++ lib/regex_internal.h	2014-04-30 18:34:31.110773635 -0700
@@ -182,10 +182,6 @@
 # if BITSET_WORD_BITS <= SBC_MAX
 #  error "Invalid SBC_MAX"
 # endif
-#elif BITSET_WORD_MAX == (0xffffffff + 2) * 0xffffffff
-/* Work around a bug in 64-bit PGC (before version 6.1-2), where the
-   preprocessor mishandles large unsigned values as if they were signed.  */
-# define BITSET_WORD_BITS 64
 #else
 # error "Add case for new bitset_word_t size"
 #endif