Viewing file:  pr65408.c (1.62 KB) -rw-r--r--
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/* PR middle-end/36043 target/58744 target/65408 */
/* { dg-do run { target mmap } } */
/* { dg-options "-O2" } */
#include <sys/mman.h>
#ifndef MAP_ANONYMOUS
#define MAP_ANONYMOUS MAP_ANON
#endif
#ifndef MAP_ANON
#define MAP_ANON 0
#endif
#ifndef MAP_FAILED
#define MAP_FAILED ((void *)-1)
#endif
typedef struct
{
unsigned char r;
unsigned char g;
unsigned char b;
} __attribute__((packed)) pr58744;
typedef struct
{
unsigned short r;
unsigned short g;
unsigned short b;
} pr36043;
typedef struct
{
int r;
int g;
int b;
} pr65408;
__attribute__ ((noinline, noclone))
void
f1a (pr58744 x)
{
if (x.r != 1 || x.g != 2 || x.b != 3)
__builtin_abort();
}
__attribute__ ((noinline, noclone))
void
f1 (pr58744 *x)
{
f1a (*x);
}
__attribute__ ((noinline, noclone))
void
f2a (pr36043 x)
{
if (x.r != 1 || x.g != 2 || x.b != 3)
__builtin_abort();
}
__attribute__ ((noinline, noclone))
void
f2 (pr36043 *x)
{
f2a (*x);
}
__attribute__ ((noinline, noclone))
void
f3a (pr65408 x)
{
if (x.r != 1 || x.g != 2 || x.b != 3)
__builtin_abort();
}
__attribute__ ((noinline, noclone))
void
f3 (pr65408 *x)
{
f3a (*x);
}
int
main ()
{
char *p = mmap ((void *) 0, 131072, PROT_READ | PROT_WRITE,
MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
if (p == MAP_FAILED)
return 0;
char *endp = p + 65536;
if (munmap (endp, 65536) < 0)
return 0;
pr58744 *s1 = (pr58744 *) endp - 1;
s1->r = 1;
s1->g = 2;
s1->b = 3;
f1 (s1);
pr36043 *s2 = (pr36043 *) endp - 1;
s2->r = 1;
s2->g = 2;
s2->b = 3;
f2 (s2);
pr65408 *s3 = (pr65408 *) endp - 1;
s3->r = 1;
s3->g = 2;
s3->b = 3;
f3 (s3);
return 0;
}
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