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[PATCH v2 6/9] test_hexdump: switch to memcmp()

From Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Newsgroups linux.kernel
Subject [PATCH v2 6/9] test_hexdump: switch to memcmp()
Date 2015-12-09 02:00 +0100
Message-ID <qDBgS-17E-23@gated-at.bofh.it> (permalink)
References <qDBgR-17E-3@gated-at.bofh.it>
Organization linux.* mail to news gateway

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Better to use memcmp() against entire buffer to check that nothing is happened
to the data in the tail.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 lib/test_hexdump.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/lib/test_hexdump.c b/lib/test_hexdump.c
index 141d031..4b949aa 100644
--- a/lib/test_hexdump.c
+++ b/lib/test_hexdump.c
@@ -72,8 +72,6 @@ static void __init test_hexdump_prepare_test(size_t len, int rowsize,
 	else
 		result = test_data_1_le;
 
-	memset(test, FILL_CHAR, testlen);
-
 	/* hex dump */
 	p = test;
 	for (i = 0; i < l / gs; i++) {
@@ -109,13 +107,15 @@ static void __init test_hexdump(size_t len, int rowsize, int groupsize,
 	char test[TEST_HEXDUMP_BUF_SIZE];
 	char real[TEST_HEXDUMP_BUF_SIZE];
 
+	memset(real, FILL_CHAR, sizeof(real));
 	hex_dump_to_buffer(data_b, len, rowsize, groupsize, real, sizeof(real),
 			   ascii);
 
+	memset(test, FILL_CHAR, sizeof(test));
 	test_hexdump_prepare_test(len, rowsize, groupsize, test, sizeof(test),
 				  ascii);
 
-	if (strcmp(test, real)) {
+	if (memcmp(test, real, TEST_HEXDUMP_BUF_SIZE)) {
 		pr_err("Len: %zu row: %d group: %d\n", len, rowsize, groupsize);
 		pr_err("Result: '%s'\n", real);
 		pr_err("Expect: '%s'\n", test);
-- 
2.6.2

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Thread

[PATCH v2 0/9] hexdump: update test suite Andy Shevchenko <andriy.shevchenko@linux.intel.com> - 2015-12-09 02:00 +0100
  [PATCH v2 8/9] test_hexdump: test all possible group sizes for overflow Andy Shevchenko <andriy.shevchenko@linux.intel.com> - 2015-12-09 02:00 +0100
  [PATCH v2 3/9] test_hexdump: define FILL_CHAR constant Andy Shevchenko <andriy.shevchenko@linux.intel.com> - 2015-12-09 02:00 +0100
  [PATCH v2 6/9] test_hexdump: switch to memcmp() Andy Shevchenko <andriy.shevchenko@linux.intel.com> - 2015-12-09 02:00 +0100
  [PATCH v2 1/9] test_hexdump: rename to test_hexdump Andy Shevchenko <andriy.shevchenko@linux.intel.com> - 2015-12-09 02:00 +0100

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