Richard Biener <rguent...@suse.de> writes: > On Wed, 28 May 2014, Richard Sandiford wrote: > >> Richard Biener <rguent...@suse.de> writes: >> > The following changes the configury to insist on [u]int64_t being >> > available and removes the very old __int64 case. Autoconf doesn't >> > check for it, support came in via a big merge in Dec 2002, r60174, >> > and it was never used on the libcpp side until I fixed that with >> > the last patch of this series, so we couldn't have relied on it >> > at least since libcpp was introduced. >> > >> > Both libcpp and vmsdbg.h now use [u]int64_t, switching HOST_WIDE_INT >> > to literally use int64_t has to be done with the grand renaming of >> > all users due to us using 'unsigned HOST_WIDE_INT'. >> > >> > Btw, I couldn't find any "standard" way of writing >> > [u]int64_t literals (substitution for HOST_WIDE_INT_C) nor >> > one for printf formats (substitutions for HOST_WIDE_INT_PRINT >> > and friends). I'll consider doing s/HOST_WIDE_INT/[U]INT64/ >> > there if nobody comes up with a better plan. >> >> Not sure whether you meant that to apply to both groups, but as far as >> the HOST_WIDE_INT_C replacement goes, how about just using int64_t (N) >> instead of HOST_WIDE_INT_C (N) or INT64_C (N)? > > int64_t (N) would already be "taken", but yes, I considered [U]INT64_C > (N).
Not sure what you mean by "taken" though. Isn't it just a C++-style cast? The nice thing about [u]int64_t (N) is that it Just Works for both constant and non-constant N. We shouldn't really need a special macro that can only handle constant N. E.g.: #include <stdint.h> uint64_t x = uint64_t (1) << 48; Thanks, Richard