+ * regcomp.c (re_compile_fastmap_iter, init_dfa, init_word_char):
+ (optimize_subexps, lower_subexp):
+ Don't assume 1<<31 has defined behavior on hosts with 32-bit int,
+ since the signed shift might overflow. Use 1u<<31 instead.
+ * regex_internal.h (bitset_set, bitset_clear, bitset_contain): Likewise.
+ * regexec.c (check_dst_limits_calc_pos_1, check_subexp_matching_top):
+ Likewise.
+ * regcomp.c (optimize_subexps, lower_subexp):
+ Use CHAR_BIT rather than 8, for clarity.
+ * regexec.c (check_dst_limits_calc_pos_1):
+ (check_subexp_matching_top): Likewise.
+ * regcomp.c (init_dfa): Make table_size unsigned, so that we don't
+ have to worry about portability issues when shifting it left.
+ Remove no-longer-needed test for table_size > 0.
+ * regcomp.c (parse_sub_exp): Do not shift more bits than there are
+ in a word, as the resulting behavior is undefined.
+ * regexec.c (check_dst_limits_calc_pos_1): Likewise;
+ in one case, a <= should have been an <, and in another case the
+ whole test was missing.
+ * regex_internal.h (BYTE_BITS): Remove. All uses changed to
+ the standard name CHAR_BIT.
+ * regexec.c (match_ctx_add_entry): Don't assume that ~0 == -1;
+ this is not true on one's complement and signed-magnitude hosts.
+