[Qemu-devel] [PULL 12/36] tests: Fix uninitialized byte in test_visitor_in_fuzz

[Paolo Bonzini]

From: Andrey Shinkevich <address@hidden>

One byte in the local buffer stays uninitialized, at least with the
first iteration, because of the double decrement in the
test_visitor_in_fuzz(). This is what Valgrind does not like and not
critical for the test itself. So, reduce the number of the memory
issues reports.

Signed-off-by: Andrey Shinkevich <address@hidden>
Message-Id: <address@hidden>
Signed-off-by: Paolo Bonzini <address@hidden>
---
 tests/test-string-input-visitor.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/tests/test-string-input-visitor.c 
b/tests/test-string-input-visitor.c
index 34b54df..5418e08 100644
--- a/tests/test-string-input-visitor.c
+++ b/tests/test-string-input-visitor.c
@@ -444,16 +444,14 @@ static void test_visitor_in_fuzz(TestInputVisitorData 
*data,
     char buf[10000];
 
     for (i = 0; i < 100; i++) {
-        unsigned int j;
+        unsigned int j, k;
 
         j = g_test_rand_int_range(0, sizeof(buf) - 1);
 
         buf[j] = '\0';
 
-        if (j != 0) {
-            for (j--; j != 0; j--) {
-                buf[j - 1] = (char)g_test_rand_int_range(0, 256);
-            }
+        for (k = 0; k != j; k++) {
+            buf[k] = (char)g_test_rand_int_range(0, 256);
         }
 
         v = visitor_input_test_init(data, buf);
-- 
1.8.3.1