| /* 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; |
| } |