* lib/abitset.c (abitset_resize): Rewrite to avoid warnings from
compilers that don't understand that abort () does not return.
* src/state.c (transitions_to): Likewise.
* m4/cxx.m4 (BISON_TEST_FOR_WORKING_CXX_COMPILER): Check
that '#include <cstdlib>' works.
* src/system.h (INT8_MIN, INT16_MIN, INT32_MIN, INT8_MAX):
(INT16_MAX, UINT8_MAX, INT32_MAX, UINT16_MAX, UINT32_MAX):
#undef if ! defined __STDC_VERSION__ || __STDC_VERSION__ < 199901,
for the benefit of some pre-C99 compilers.
(abitset_bytes): Return a size that is aligned
properly for vectors of objects. Do not assume that adding a
header size to a multiple of a word size yields a value that is
properly aligned for the whole union.
(abitset_ones, abitset_zero, abitset_empty_p, abitset_copy1,
abitset_not, abitset_equal_p, abitset_subset_p, abitset_disjoint_p,
abitset_and, abitset_and_cmp, abitset_andn, abitset_andn_cmp,
abitset_or, abitset_or_cmp, abitset_xor, abitset_xor_cmp,
abitset_and_or, abitset_and_or_cmp, abitset_andn_or,
abitset_andn_or_cmp, abitset_or_and, abitset_or_and_cmp,
abitset_copy): Supply prototype decls, to improve the type-checking
that GCC can do.
(struct abitset_struct, abitset, struct bitset_struct): Remove.
abitset_list, abitset_list_reverse, abitset_list):
Use bitset_bindex, not int or unsigned int or size_t, to count bits.
(abitset_ones, abitset_zero, abitset_bytes):
Use size_t, not unsigned int, to count bytes.
(abitset_empty_p, abitset_not, abitset_equal_p,
abitset_subset_p, abitset_disjoint_p, abitset_and,
abitset_and_cmp, abitset_andn, abitset_andn_cmp, abitset_or,
abitset_or_cmp, abitset_xor, abitset_xor_cmp, abitset_and_or,
abitset_and_or_cmp, abitset_andn_or, abitset_andn_or_cmp,
abitset_or_and, abitset_or_and_cmp): Use bitset_windex instead of
unsigned int.
Do not assume that bitset_windex is the same width as unsigned.
(abitset_unused_clear): Do not assume that bitset_word is the same
width as int.
(abitset_op1): Use -1, not ~0, as memset arg (for portability to one's
complement hosts!).
