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authorAdhemerval Zanella <adhemerval.zanella@linaro.org>2024-01-18 10:18:01 -0300
committerFlorian Weimer <fweimer@redhat.com>2024-05-28 07:30:07 +0200
commitdd535f4f19ef2b5c367a362af445ecadcf45401e (patch)
tree9a5ed482f0baeb50c09ce587836918cb74fe5acb /support/xtime.h
parent26e7005728f0eea2972474e6be2905c467661237 (diff)
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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 <dj@redhat.com>
(cherry picked from commit a4ed0471d71739928a0d0fa3258b3ff3b158e9b9)
Diffstat (limited to 'support/xtime.h')
-rw-r--r--support/xtime.h2
1 files changed, 1 insertions, 1 deletions
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