| 21 | } |
| 22 | |
| 23 | int libc_mem(void) |
| 24 | { |
| 25 | void *p; |
| 26 | int save; |
| 27 | |
| 28 | errno = 0; |
| 29 | |
| 30 | p = malloc(-1); |
| 31 | save = errno; |
| 32 | |
| 33 | if (p != NULL) |
| 34 | merror("malloc (-1) succeeded."); |
| 35 | |
| 36 | if (p == NULL && save != ENOMEM) |
| 37 | merror("errno is not set correctly"); |
| 38 | |
| 39 | p = malloc(10); |
| 40 | if (p == NULL) |
| 41 | merror("malloc (10) failed."); |
| 42 | |
| 43 | /* realloc (p, 0) == free (p). */ |
| 44 | p = realloc(p, 0); |
| 45 | if (p != NULL) |
| 46 | merror("realloc (p, 0) failed."); |
| 47 | |
| 48 | p = malloc(0); |
| 49 | if (p == NULL) |
| 50 | { |
| 51 | printf("malloc(0) returns NULL\n"); |
| 52 | } |
| 53 | |
| 54 | p = realloc(p, 0); |
| 55 | if (p != NULL) |
| 56 | merror("realloc (p, 0) failed."); |
| 57 | |
| 58 | return errors != 0; |
| 59 | } |
| 60 | FINSH_FUNCTION_EXPORT(libc_mem, memory test for libc); |