diff options
Diffstat (limited to 'SingleSource/Regression/C/gcc-c-torture/execute/loop-2f.c')
-rw-r--r-- | SingleSource/Regression/C/gcc-c-torture/execute/loop-2f.c | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/SingleSource/Regression/C/gcc-c-torture/execute/loop-2f.c b/SingleSource/Regression/C/gcc-c-torture/execute/loop-2f.c new file mode 100644 index 00000000..a857f270 --- /dev/null +++ b/SingleSource/Regression/C/gcc-c-torture/execute/loop-2f.c @@ -0,0 +1,64 @@ +/* { dg-require-effective-target mmap } */ +/* { dg-skip-if "the executable is at the same position the test tries to remap" { m68k-*-linux* } } */ + +#include <limits.h> + +#include <sys/types.h> +#include <sys/mman.h> +#include <sys/stat.h> +#include <fcntl.h> +#ifndef MAP_ANON +#ifdef MAP_ANONYMOUS +#define MAP_ANON MAP_ANONYMOUS +#else +#define MAP_ANON MAP_FILE +#endif +#endif +#ifndef MAP_FILE +#define MAP_FILE 0 +#endif +#ifndef MAP_FIXED +#define MAP_FIXED 0 +#endif + +#define MAP_START (void *)0x7fff8000 +#define MAP_LEN 0x10000 + +#define OFFSET (MAP_LEN/2 - 2 * sizeof (char)); + +f (int s, char *p) +{ + int i; + for (i = s; i >= 0 && &p[i] < &p[40]; i++) + { + p[i] = -2; + } +} + +main () +{ +#ifdef MAP_ANON + char *p; + int dev_zero; + + dev_zero = open ("/dev/zero", O_RDONLY); + /* -1 is OK when we have MAP_ANON; else mmap will flag an error. */ + if (INT_MAX != 0x7fffffffL || sizeof (char *) != sizeof (int)) + exit (0); + p = mmap (MAP_START, MAP_LEN, PROT_READ|PROT_WRITE, + MAP_ANON|MAP_FIXED|MAP_PRIVATE, dev_zero, 0); + if (p != (char *)-1) + { + p += OFFSET; + p[39] = 0; + f (0, p); + if (p[39] != (char)-2) + abort (); + p[39] = 0; + f (-1, p); + if (p[39] != 0) + abort (); + } +#endif + exit (0); +} |