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[bug-diffutils] bug#24311: bug#24311: [PATCH] maint: accommodate LP64 sy
From: |
Paul Eggert |
Subject: |
[bug-diffutils] bug#24311: bug#24311: [PATCH] maint: accommodate LP64 systems |
Date: |
Fri, 26 Aug 2016 15:24:02 -0700 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.2.0 |
On 08/26/2016 02:59 PM, Peter Rosin wrote:
Feels designed to target 64-bit Windows.
It isn't. It's more the other way round. The Unix (and GNU) LP64
tradition came first, and the 64-bit MS-Windows designers made it hard
to write 64-bit code that is portable among the platforms.
Do you, or do you not require c99?
It's not that simple. Although many GNU apps (including diffutils, I
expect) assume some C99 features, they are typically portable to
less-than-perfect POSIXish implementations that don't have all features
that C99 requires.
The main sticking point in this particular case is support for printf
formats like %td. This requires library support, which in practice
trails behind compiler support. We can reasonably ask people to use a
C99ish compiler even when running on older platforms (just install GCC).
It hasn't been so easy to insist on a C99ish C library.
the POSIX part seems to be connected to c99, but what do I know?
POSIX assumes C99 or later nowadays.
Besides, I thought the gnulib inttypes module (or whatever it's called)
provided the PRI?PTR macros if missing/broken?
PRI?PTR are not the right macros to use here. The values in question are
of type ptrdiff_t, and ptrdiff_t != intptr_t on some (admittedly
unusual) platforms.
- [bug-diffutils] bug#24311: [PATCH] maint: accommodate LP64 systems, Peter Rosin, 2016/08/26
- [bug-diffutils] bug#24311: bug#24311: [PATCH] maint: accommodate LP64 systems, Paul Eggert, 2016/08/26
- [bug-diffutils] bug#24311: bug#24311: bug#24311: [PATCH] maint: accommodate LP64 systems, Eric Blake, 2016/08/26
- [bug-diffutils] bug#24311: bug#24311: [PATCH] maint: accommodate LP64 systems, Peter Rosin, 2016/08/26
- [bug-diffutils] bug#24311: bug#24311: bug#24311: [PATCH] maint: accommodate LP64 systems, Peter Rosin, 2016/08/28
- [bug-diffutils] bug#24311: bug#24311: bug#24311: [PATCH] maint: accommodate LP64 systems, Paul Eggert, 2016/08/28
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- [bug-diffutils] bug#24311: bug#24311: bug#24311: bug#24311: [PATCH] maint: accommodate LP64 systems, Paul Eggert, 2016/08/30
- Message not available
- [bug-diffutils] bug#24311: bug#24311: bug#24311: bug#24311: [PATCH] maint: accommodate LP64 systems, Paul Eggert, 2016/08/30
- [bug-diffutils] bug#24311: bug#24311: [PATCH] maint: accommodate LP64 systems, Peter Rosin, 2016/08/27
- [bug-diffutils] bug#24311: bug#24311: [PATCH] maint: accommodate LP64 systems, Paul Eggert, 2016/08/27