🚀 go-pugleaf

I recently observed an unexpected behavior with g++, which I have
traced back to the transition between 2.7.0 and 2.7.1.  I have
observed the faulty behavior on both i586 Linux ELF 1.3.43 and 
IRIX 5.3 SGI.

The problem:  ``__attribute__ ((packed))'' works in gcc, but not in
g++.  Observe the following test case, test.c:

#include <stddef.h>
#include <stdio.h>

struct test {
  char a __attribute__ ((packed));
  long b __attribute__ ((packed));
} c;

main()
{
  printf("sizeof(struct test) = %u\n",sizeof(struct test));
  printf("offsetof(struct test,a) = %u\n",offsetof(struct test,a));
  printf("offsetof(struct test,b) = %u\n",offsetof(struct test,b));
}

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

With the C compiler, gcc, I get the expected results:

russell@tdb[/tmp] $ gcc test.c
russell@tdb[/tmp] $ a.out
sizeof(struct test) = 5
offsetof(struct test,a) = 0
offsetof(struct test,b) = 1

However, compiling the exact same source file with the C++ compiler,
g++, I get unexpected results:

russell@tdb[/tmp] $ g++ test.c
russell@tdb[/tmp] $ a.out
sizeof(struct test) = 8
offsetof(struct test,a) = 0
offsetof(struct test,b) = 4

Thanks!

-- 
Russell S. Senior                                  russell@tdb.com
T. Dan Bracken, Inc.                          seniorr@teleport.com
5415 S.E. Milwaukie Avenue, Suite 4                 (503) 233-2181
Portland, Oregon  97202