| /* Copyright (C) 2000 Free Software Foundation. |
| |
| Ensure builtin strlen, strcmp, strchr, strrchr and strncpy |
| perform correctly. |
| |
| Written by Jakub Jelinek, 11/7/2000. */ |
| |
| extern void abort (void); |
| extern __SIZE_TYPE__ strlen (const char *); |
| extern int strcmp (const char *, const char *); |
| extern char *strchr (const char *, int); |
| extern char *strrchr (const char *, int); |
| extern char *strncpy (char *, const char *, __SIZE_TYPE__); |
| extern void *memset (void *, int, __SIZE_TYPE__); |
| extern int memcmp (const void *, const void *, __SIZE_TYPE__); |
| |
| int x = 6; |
| int y = 1; |
| char *bar = "hi world"; |
| char buf [64]; |
| |
| int main() |
| { |
| const char *const foo = "hello world"; |
| char dst [64]; |
| |
| if (strlen (bar) != 8) |
| abort (); |
| if (strlen (bar + (++x & 2)) != 6) |
| abort (); |
| if (x != 7) |
| abort (); |
| if (strlen (foo + (x++, 6)) != 5) |
| abort (); |
| if (x != 8) |
| abort (); |
| if (strlen (foo + (++x & 1)) != 10) |
| abort (); |
| if (x != 9) |
| abort (); |
| if (strcmp (foo + (x -= 6), "lo world")) |
| abort (); |
| if (x != 3) |
| abort (); |
| if (strcmp (foo, bar) >= 0) |
| abort (); |
| if (strcmp (foo, bar + (x++ & 1)) >= 0) |
| abort (); |
| if (x != 4) |
| abort (); |
| if (strchr (foo + (x++ & 7), 'l') != foo + 9) |
| abort (); |
| if (x != 5) |
| abort (); |
| if (strchr (bar, 'o') != bar + 4) |
| abort (); |
| if (strchr (bar, '\0') != bar + 8) |
| abort (); |
| if (strrchr (bar, 'x')) |
| abort (); |
| if (strrchr (bar, 'o') != bar + 4) |
| abort (); |
| if (strcmp (foo + (x++ & 1), "ello world" + (--y & 1))) |
| abort (); |
| if (x != 6 || y != 0) |
| abort (); |
| dst[5] = ' '; |
| dst[6] = '\0'; |
| x = 5; |
| y = 1; |
| if (strncpy (dst + 1, foo + (x++ & 3), 4) != dst + 1 |
| || x != 6 |
| || strcmp (dst + 1, "ello ")) |
| abort (); |
| memset (dst, ' ', sizeof dst); |
| if (strncpy (dst + (++x & 1), (y++ & 3) + "foo", 10) != dst + 1 |
| || x != 7 |
| || y != 2 |
| || memcmp (dst, " oo\0\0\0\0\0\0\0\0 ", 12)) |
| abort (); |
| memset (dst, ' ', sizeof dst); |
| if (strncpy (dst, "hello", 8) != dst || memcmp (dst, "hello\0\0\0 ", 9)) |
| abort (); |
| x = '!'; |
| memset (buf, ' ', sizeof buf); |
| if (memset (buf, x++, ++y) != buf |
| || x != '!' + 1 |
| || y != 3 |
| || memcmp (buf, "!!!", 3)) |
| abort (); |
| if (memset (buf + y++, '-', 8) != buf + 3 |
| || y != 4 |
| || memcmp (buf, "!!!--------", 11)) |
| abort (); |
| x = 10; |
| if (memset (buf + ++x, 0, y++) != buf + 11 |
| || x != 11 |
| || y != 5 |
| || memcmp (buf + 8, "---\0\0\0", 7)) |
| abort (); |
| if (memset (buf + (x += 4), 0, 6) != buf + 15 |
| || x != 15 |
| || memcmp (buf + 10, "-\0\0\0\0\0\0\0\0\0", 11)) |
| abort (); |
| |
| return 0; |
| } |