__attribute__ aligned problem with gcc 4

[Jim Hauxwell]

Hi,

I have tested a number of different versions of gcc under mingw and non
of them seem to support the __attribute__ aligned syntax.  Same code
under linux works fine.

Strange thing is if I take the .s from gcc and manually add the
alignment and assemble it, everything works.  It seems to be a
deficiency in the code generation on gcc.

code
----

#include <stdio.h>

static int x __attribute__ ((aligned (16)));

int main(void)
{
     printf("address x = %p\n", &x);

     return 0;
}


gcc -S test.c -o test.s


If you change .lcomm _x,16 inside the .s to add an alignment and re-compile

.lcomm _x,16,32  (aligned to 32 for example)

as test.s -o test.o
gcc test.o -o test.exe

Then everything works.


Anyone know why the __attribute__ ((aligned ())) seems to be disabled
under mingw compilers???

Cheers

Jim


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[Danny Smith]

From: "Jim Hauxwell"
> Hi,
>
> I have tested a number of different versions of gcc under mingw and non
> of them seem to support the __attribute__ aligned syntax.  Same code
> under linux works fine.
>


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37216

Fixed in gcc 4.5.0

Danny

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