| /* Copyright (C) 2002 Free Software Foundation. |
| |
| Test memset with various combinations of pointer alignments and lengths to |
| make sure any optimizations in the library are correct. |
| |
| Written by Michael Meissner, March 9, 2002. */ |
| |
| #include <string.h> |
| |
| #ifndef MAX_OFFSET |
| #define MAX_OFFSET (sizeof (long long)) |
| #endif |
| |
| #ifndef MAX_COPY |
| #define MAX_COPY (10 * sizeof (long long)) |
| #endif |
| |
| #ifndef MAX_EXTRA |
| #define MAX_EXTRA (sizeof (long long)) |
| #endif |
| |
| #define MAX_LENGTH (MAX_OFFSET + MAX_COPY + MAX_EXTRA) |
| |
| static union { |
| char buf[MAX_LENGTH]; |
| long long align_int; |
| long double align_fp; |
| } u; |
| |
| char A = 'A'; |
| |
| main () |
| { |
| int off, len, i; |
| char *p, *q; |
| |
| for (off = 0; off < MAX_OFFSET; off++) |
| for (len = 1; len < MAX_COPY; len++) |
| { |
| for (i = 0; i < MAX_LENGTH; i++) |
| u.buf[i] = 'a'; |
| |
| p = memset (u.buf + off, '\0', len); |
| if (p != u.buf + off) |
| abort (); |
| |
| q = u.buf; |
| for (i = 0; i < off; i++, q++) |
| if (*q != 'a') |
| abort (); |
| |
| for (i = 0; i < len; i++, q++) |
| if (*q != '\0') |
| abort (); |
| |
| for (i = 0; i < MAX_EXTRA; i++, q++) |
| if (*q != 'a') |
| abort (); |
| |
| p = memset (u.buf + off, A, len); |
| if (p != u.buf + off) |
| abort (); |
| |
| q = u.buf; |
| for (i = 0; i < off; i++, q++) |
| if (*q != 'a') |
| abort (); |
| |
| for (i = 0; i < len; i++, q++) |
| if (*q != 'A') |
| abort (); |
| |
| for (i = 0; i < MAX_EXTRA; i++, q++) |
| if (*q != 'a') |
| abort (); |
| |
| p = memset (u.buf + off, 'B', len); |
| if (p != u.buf + off) |
| abort (); |
| |
| q = u.buf; |
| for (i = 0; i < off; i++, q++) |
| if (*q != 'a') |
| abort (); |
| |
| for (i = 0; i < len; i++, q++) |
| if (*q != 'B') |
| abort (); |
| |
| for (i = 0; i < MAX_EXTRA; i++, q++) |
| if (*q != 'a') |
| abort (); |
| } |
| |
| exit (0); |
| } |