Bug#568881: marked as done (gnat-4.4: Type to stream input/output broken on big endian archs)
Your message dated Mon, 08 Feb 2010 16:33:17 +0100
with message-id <a97615bb933863f90b495b3f4e424d43@localhost>
and subject line Re: Bug#568881: gnat-4.4: Type to stream input/output broken on big endian archs
has caused the Debian Bug report #568881,
regarding gnat-4.4: Type to stream input/output broken on big endian archs
to be marked as done.
This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.
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--
568881: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=568881
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems
--- Begin Message ---
Package: gnat-4.4
Version: 4.4.3-1
Severity: normal
The output of write_stream is different regarding the architecture it is
executed :
powerpc (big endian):
hexdump -C ./output_stream.dat
00000000 fa da da da de ad be ef
amd64 (little endian):
00000000 ef be ad de da da da fa
i386 (little endian):
00000000 ef be ad de da da da fa
mips (big endian):
00000000 fa da da da de ad be ef
sparc (big endian):
00000000 fa da da da de ad be ef
As far as I understood streams, the output should be neutral regarding of the
architecture.
*** write_stream.adb
with Ada.Streams.Stream_IO;
with Interfaces;
procedure Write_Stream is
File : Ada.Streams.Stream_IO.File_Type;
Item_To_Write : constant Interfaces.Unsigned_64 := 16#Fada_D_Ada_Dead_Beef#;
Stream : Ada.Streams.Stream_IO.Stream_Access;
begin
Ada.Streams.Stream_IO.Create (File,
Name => "output_stream.dat");
Stream := Ada.Streams.Stream_IO.Stream (File);
Interfaces.Unsigned_64'Output (Stream, Item_To_Write);
Ada.Streams.Stream_IO.Close (File);
end Write_Stream;
-- System Information:
Debian Release: squeeze/sid
APT prefers unstable
APT policy: (500, 'unstable')
Architecture: powerpc (ppc64)
Kernel: Linux 2.6.30-2-powerpc64 (SMP w/4 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Versions of packages gnat-4.4 depends on:
ii gcc-4.4 4.4.3-2 The GNU C compiler
ii gnat-4.4-base 4.4.3-1 The GNU Compiler Collection (gnat
ii libc6 2.10.2-5 Embedded GNU C Library: Shared lib
ii libc6-dev 2.10.2-5 Embedded GNU C Library: Developmen
ii libgcc1 1:4.4.3-2 GCC support library
ii libgmp3c2 2:4.3.2+dfsg-1 Multiprecision arithmetic library
ii libgnat-4.4 4.4.3-1 Runtime library for GNU Ada applic
ii libgnatprj4.4 4.4.3-1 GNU Ada Project Manager
ii libgnatvsn4.4 4.4.3-1 GNU Ada compiler version library
ii libmpfr1ldbl 2.4.2-3 multiple precision floating-point
gnat-4.4 recommends no packages.
Versions of packages gnat-4.4 suggests:
pn ada-reference-manual <none> (no description available)
pn gnat-4.4-doc <none> (no description available)
-- no debconf information
--- End Message ---
--- Begin Message ---
> As far as I understood streams, the output should be neutral regarding of
> the architecture.
Where did you get that idea? The output seems perfectly normal to me. And
remember that I used to to embedded programming on PowerPC and deal with
endianness issues :)
ARM 13.13.2(9/2) says: "[...] the representation of those stream elements
is implementation defined. [...]"
--
Ludovic Brenta.
--- End Message ---
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