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Diffstat (limited to 'gnulib/tests/test-memcmp.c')
m--------- | gnulib | 0 | ||||
-rw-r--r-- | gnulib/tests/test-memcmp.c | 71 |
2 files changed, 71 insertions, 0 deletions
diff --git a/gnulib b/gnulib deleted file mode 160000 -Subproject 443bc5ffcf7429e557f4a371b0661abe98ddbc1 diff --git a/gnulib/tests/test-memcmp.c b/gnulib/tests/test-memcmp.c new file mode 100644 index 0000000..4790179 --- /dev/null +++ b/gnulib/tests/test-memcmp.c @@ -0,0 +1,71 @@ +/* + * Copyright (C) 2008-2011 Free Software Foundation, Inc. + * Written by Simon Josefsson + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. */ + +#include <config.h> + +#include <string.h> + +#include "signature.h" +SIGNATURE_CHECK (memcmp, int, (void const *, void const *, size_t)); + +#include "zerosize-ptr.h" +#include "macros.h" + +int +main (void) +{ + /* Test equal / not equal distinction. */ + ASSERT (memcmp (zerosize_ptr (), zerosize_ptr (), 0) == 0); + ASSERT (memcmp ("foo", "foobar", 2) == 0); + ASSERT (memcmp ("foo", "foobar", 3) == 0); + ASSERT (memcmp ("foo", "foobar", 4) != 0); + ASSERT (memcmp ("foo", "bar", 1) != 0); + ASSERT (memcmp ("foo", "bar", 3) != 0); + + /* Test less / equal / greater distinction. */ + ASSERT (memcmp ("foo", "moo", 4) < 0); + ASSERT (memcmp ("moo", "foo", 4) > 0); + ASSERT (memcmp ("oomph", "oops", 3) < 0); + ASSERT (memcmp ("oops", "oomph", 3) > 0); + ASSERT (memcmp ("foo", "foobar", 4) < 0); + ASSERT (memcmp ("foobar", "foo", 4) > 0); + + /* Some old versions of memcmp were not 8-bit clean. */ + ASSERT (memcmp ("\100", "\201", 1) < 0); + ASSERT (memcmp ("\201", "\100", 1) > 0); + ASSERT (memcmp ("\200", "\201", 1) < 0); + ASSERT (memcmp ("\201", "\200", 1) > 0); + + /* The Next x86 OpenStep bug shows up only when comparing 16 bytes + or more and with at least one buffer not starting on a 4-byte boundary. + William Lewis provided this test program. */ + { + char foo[21]; + char bar[21]; + int i; + for (i = 0; i < 4; i++) + { + char *a = foo + i; + char *b = bar + i; + strcpy (a, "--------01111111"); + strcpy (b, "--------10000000"); + ASSERT (memcmp (a, b, 16) < 0); + } + } + + return 0; +} |