[Bug ada/114065] gnat build with -D_TIME_BITS=64 -D_FILE_OFFSET_BITS=64 fails on 32bit archs

["nicolas at debian dot org" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114065

Nicolas Boulenguez <nicolas at debian dot org> changed:

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--- Comment #27 from Nicolas Boulenguez <nicolas at debian dot org> ---
Created attachment 58252
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=58252&action=edit
Version 10, tarball with 8 commits + tests

Hello.
Version 10
* restores support for time_t in System.OS_Lib, with a comment saying that the
type is now unrelated with C (patch 4/8).
* restores support for timespec in Ada.Calendar.Conversions and timeval in
GNAT.Calendar, via wrappers delegating to C_Time.  The subtype ranges for the
parameters are tighter, but that only makes preexisting pre- and
post-conditions explicit.
* unsuppresses the Overflow_Check
* replaces pre- and post-conditions with subtype ranges
* fixes a type name in docs (patch 3/8)
* fixes a typo on android
* roughly sorts the patches by decreasing importance (only 1-2 fix bugs)

The restorations hopefully answer the concerns expressed by Arnaud Charlet at
https://gcc.gnu.org/pipermail/gcc-patches/2024-May/651794.html.  In
Ada.Calendar, the changes only affect the private part.