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authorDavid S. Miller <davem@davemloft.net>2014-04-30 12:57:51 -0700
committerDavid S. Miller <davem@davemloft.net>2014-05-01 12:15:06 -0700
commit5331255b6eeafa74865b2e6af627cb712c41dafd (patch)
treea9d5fe7cfb4ad4af1dcb12bad7e1b158d281eca5 /string
parent4fdfe821e20a70670b3d03deb2abed5d8c83e51b (diff)
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Fix v9/64-bit strcmp when string ends in multiple zero bytes.
[BZ #16885] * sysdeps/sparc/sparc64/strcmp.S: Fix end comparison handling when multiple zero bytes exist at the end of a string. Reported by Aurelien Jarno <aurelien@aurel32.net> * string/test-strcmp.c (check): Add explicit test for situations where there are multiple zero bytes after the first.
Diffstat (limited to 'string')
-rw-r--r--string/test-strcmp.c28
1 files changed, 28 insertions, 0 deletions
diff --git a/string/test-strcmp.c b/string/test-strcmp.c
index b395dc7..fcd059f 100644
--- a/string/test-strcmp.c
+++ b/string/test-strcmp.c
@@ -329,6 +329,34 @@ check (void)
FOR_EACH_IMPL (impl, 0)
check_result (impl, s1 + i1, s2 + i2, exp_result);
}
+
+ /* Test cases where there are multiple zero bytes after the first. */
+
+ for (size_t i = 0; i < 16 + 1; i++)
+ {
+ s1[i] = 0x00;
+ s2[i] = 0x00;
+ }
+
+ for (size_t i = 0; i < 16; i++)
+ {
+ int exp_result;
+
+ for (int val = 0x01; val < 0x100; val++)
+ {
+ for (size_t j = 0; j < i; j++)
+ {
+ s1[j] = val;
+ s2[j] = val;
+ }
+
+ s2[i] = val;
+
+ exp_result = SIMPLE_STRCMP (s1, s2);
+ FOR_EACH_IMPL (impl, 0)
+ check_result (impl, s1, s2, exp_result);
+ }
+ }
}