Viewing file:  sso-14.c (1.02 KB) -rw-r--r--
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/* PR c/100920 */
/* Testcase by George Thopas <george.thopas@gmail.com> */
/* { dg-do compile } */
/* { dg-require-effective-target alloca } */
#include <stddef.h>
#include <stdlib.h>
#include <string.h>
#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
#define REV_ENDIANNESS __attribute__((scalar_storage_order("big-endian")))
#else
#define REV_ENDIANNESS __attribute__((scalar_storage_order("little-endian")))
#endif
struct s_1 {
int val;
} REV_ENDIANNESS;
typedef struct s_1 t_1;
struct s_2 {
char val;
} REV_ENDIANNESS;
typedef struct s_2 t_2;
struct s12 {
t_1 a[1];
t_2 b[1];
} REV_ENDIANNESS;
typedef struct s12 t_s12;
union u12 {
t_1 a[1];
t_2 b[1];
} REV_ENDIANNESS;
typedef union u12 t_u12;
int main(void)
{
t_s12 *msg1 = __builtin_alloca(10);
t_u12 *msg2 = __builtin_alloca(10);
int same;
msg1 = malloc (sizeof (t_s12));
msg2 = malloc (sizeof (t_s12));
memset (msg1, 0, sizeof (t_s12));
memcpy (msg2, msg1, sizeof (t_s12));
same = memcmp (msg1, msg2, sizeof (t_s12));
return 0;
}
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