Pro*C and nomember_alignment precompiler option on DEC UNIX

Hi,
I need a help.

I now developing on a system with this configuration:

-Dec Alpha with DEC UNIX 3.2c;
-Oracle Server 7.2.2.4;
-Oracle Pro*C 2.1.2.0.

I need to use in C the precompiler directive #pragma nomember_alignment   for forcing byte-alignment.
But, if I use that directive, Oracle seems to fail in retrieving the correct
16-bit value from the database.
The errors occours only when the target field (short int) of my structure has a relative offset multiple of 64-bit

I attach the source code and output.

#pragma nomember_alignment /* this is the precompile directive */ #include <sqlca.h>

typedef struct {                       /* this is my structure */
    unsigned char	a[7];
    unsigned short int	b;
    unsigned char	a1[6];
    unsigned short int	b1;

T_sup_mes		sup_msg;
unsigned short int	appo_range;

main (int argc, char *argv[])
{

int		i;
char		username[20],password[20];

  strcpy(username, "smart");
  strcpy(password, "smart");
  EXEC SQL WHENEVER SQLERROR DO sql_error_ret("1) ORACLE error--\n");   EXEC SQL CONNECT :username IDENTIFIED BY :password;

  printf("\nbefore...\n\n");
  for (i=0; i<sizeof(T_sup_mes); i++){
    printf("%d) %X\n", i, ((unsigned char *)(&sup_msg))[i]);   }

                        /* now retrive the correct value from the database */   EXEC SQL SELECT range_scale INTO :appo_range

             FROM firw_conftab;

                         /* this select doesn't retreive the correct value */   EXEC SQL SELECT range_scale, range_scale

	     INTO :sup_msg.b, :sup_msg.b1
             FROM firw_conftab;

printf("\n\n...after\n\n");
  for (i=0; i<sizeof(T_sup_mes); i++){
    printf("%d) %x\n", i, ((unsigned char *)(&sup_msg))[i]);   }
  printf("\nthe correct value= %X\n\n", appo_range);   EXEC SQL COMMIT WORK RELEASE;
}
void sql_err_ret(char * msg)
{
printf("%s",msg);
}

The program output is ...

before...

0)	0
1)	0
2) 	0
3) 	0
4) 	0
5) 	0
6) 	0
7) 	0
8) 	0
9) 	0
10) 	0
11) 	0
12) 	0
13) 	0
14) 	0
15) 	0
16) 	0
........after
0) 	0
1) 	0
2) 	0
3) 	0
4) 	0
5) 	0
6) 	0
7) 	c0
8) 	0
9) 	0
10) 	0
11) 	0
12) 	0
13) 	0
14) 	0
15) 	c0
16) 	0

the correct value= 11C0

Tanks.

-- 
Marco Sciarroni                        E-mail: Marco.Sciarroni_at_trs.it
T.R.S. S.p.A.
Via  V. G. Galati, 91                   Tel: ++39-(0)6-4063911
00155  ROMA  Italy                     Fax: ++39-(0)6-4060300