From a4ed0471d71739928a0d0fa3258b3ff3b158e9b9 Mon Sep 17 00:00:00 2001 From: Adhemerval Zanella Date: Thu, 18 Jan 2024 10:18:01 -0300 Subject: Always define __USE_TIME_BITS64 when 64 bit time_t is used It was raised on libc-help [1] that some Linux kernel interfaces expect the libc to define __USE_TIME_BITS64 to indicate the time_t size for the kABI. Different than defined by the initial y2038 design document [2], the __USE_TIME_BITS64 is only defined for ABIs that support more than one time_t size (by defining the _TIME_BITS for each module). The 64 bit time_t redirects are now enabled using a different internal define (__USE_TIME64_REDIRECTS). There is no expected change in semantic or code generation. Checked on x86_64-linux-gnu, i686-linux-gnu, aarch64-linux-gnu, and arm-linux-gnueabi [1] https://sourceware.org/pipermail/libc-help/2024-January/006557.html [2] https://sourceware.org/glibc/wiki/Y2038ProofnessDesign Reviewed-by: DJ Delorie --- support/timespec.h | 2 +- support/xtime.h | 2 +- support/xunistd.h | 2 +- 3 files changed, 3 insertions(+), 3 deletions(-) (limited to 'support') diff --git a/support/timespec.h b/support/timespec.h index 42f32bcc2c..5ccc7163a5 100644 --- a/support/timespec.h +++ b/support/timespec.h @@ -35,7 +35,7 @@ make_timespec (time_t s, long int ns) enum { TIMESPEC_HZ = 1000000000 }; -#ifndef __USE_TIME_BITS64 +#ifndef __USE_TIME64_REDIRECTS struct timespec timespec_add (struct timespec, struct timespec) __attribute__((const)); struct timespec timespec_sub (struct timespec, struct timespec) diff --git a/support/xtime.h b/support/xtime.h index 5200eef2e0..9961899634 100644 --- a/support/xtime.h +++ b/support/xtime.h @@ -30,7 +30,7 @@ __BEGIN_DECLS /* The following functions call the corresponding libc functions and terminate the process on error. */ -#ifndef __USE_TIME_BITS64 +#ifndef __USE_TIME64_REDIRECTS void xclock_gettime (clockid_t clock, struct timespec *ts); void xclock_settime (clockid_t clock, const struct timespec *ts); #else diff --git a/support/xunistd.h b/support/xunistd.h index b5e8c2f420..13be9a46a3 100644 --- a/support/xunistd.h +++ b/support/xunistd.h @@ -36,7 +36,7 @@ pid_t xwaitpid (pid_t, int *status, int flags); void xpipe (int[2]); void xdup2 (int, int); int xopen (const char *path, int flags, mode_t); -#ifndef __USE_TIME_BITS64 +#ifndef __USE_TIME64_REDIRECTS # ifdef __USE_FILE_OFFSET64 void xstat (const char *path, struct stat *); void xlstat (const char *path, struct stat *); -- cgit 1.4.1