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| author | Roland McGrath <roland@gnu.org> | 1996-03-17 12:36:52 +0000 |
|---|---|---|
| committer | Roland McGrath <roland@gnu.org> | 1996-03-17 12:36:52 +0000 |
| commit | 9b431e31e15b4620c862208c1079fdace62313aa (patch) | |
| tree | cca13ab8d19b11603196355f137caca29bc851b3 /string/tester.c | |
| parent | 5aab07eb5615fa5baec4161579f03c72280b88e2 (diff) | |
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Sun Mar 17 07:19:33 1996 Roland McGrath <roland@charlie-brown.gnu.ai.mit.edu>cvs/libc-960318
* db/Makefile (CFLAGS-hash_func.c): New variable; pass -Wno-unused.
(CFLAGS): Append -Wno-unitialized.
* sysdeps/alpha/memchr.S: New file.
* sysdeps/alpha/memchr.c: Obsolete file removed.
* string/tester.c: Soup up memchr tests.
Diffstat (limited to 'string/tester.c')
| -rw-r--r-- | string/tester.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/string/tester.c b/string/tester.c index 34d4e1c8e0..d826ff7beb 100644 --- a/string/tester.c +++ b/string/tester.c @@ -375,6 +375,7 @@ DEFUN(main, (argc, argv), int argc AND char **argv) check(memchr("abcd", 'z', 4) == NULL, 1); /* Not found. */ (void) strcpy(one, "abcd"); check(memchr(one, 'c', 4) == one+2, 2); /* Basic test. */ + check(memchr(one, ~0xff|'c', 4) == one+2, 2); /* ignore highorder bits. */ check(memchr(one, 'd', 4) == one+3, 3); /* End of string. */ check(memchr(one, 'a', 4) == one, 4); /* Beginning. */ check(memchr(one, '\0', 5) == one+4, 5); /* Finding NUL. */ @@ -385,6 +386,30 @@ DEFUN(main, (argc, argv), int argc AND char **argv) (void) strcpy(one, "a\203b"); check(memchr(one, 0203, 3) == one+1, 9); /* Unsignedness. */ + /* now test all possible alignment and length combinations to catch + bugs due to unrolled loops (assuming unrolling is limited to no + more than 128 byte chunks: */ + { + char buf[128 + sizeof(long)]; + long align, len, i, pos; + + for (align = 0; align < sizeof(long); ++align) { + for (len = 0; len < sizeof(buf) - align; ++len) { + for (i = 0; i < len; ++i) { + buf[align + i] = 'x'; /* don't depend on memset... */ + } + for (pos = 0; pos < len; ++pos) { +#if 0 + printf("align %d, len %d, pos %d\n", align, len, pos); +#endif + check(memchr(buf + align, 'x', len) == buf + align + pos, 10); + check(memchr(buf + align, 'x', pos) == NULL, 11); + buf[align + pos] = '-'; + } + } + } + } + /* memcpy - need not work for overlap. */ it = "memcpy"; check(memcpy(one, "abc", 4) == one, 1); /* Returned value. */ |