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kselftest: ftrace: Fix to compare a zero-filled hex value

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Fix to compare a zero-filled hexadecimal value with a part of
string of long hexadecimal value.

In check_types(), the last part of testcase compares with
the hex value formatted by "%x" with a part of a string of
long hex value (trimmed by tail -c and head -c). However,
if that part of long hex value contains zero (e.g. "05" of
"a3082059"), printf generated value (e.g. "5") is diffrent
string, and the test case failed.

To fix this, pass "%02x" instead of "%x" to printf.

Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Acked-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
This commit is contained in:
Masami Hiramatsu 2017-03-23 22:33:32 +09:00 committed by Shuah Khan
parent 7ba3134092
commit 9e14ef602b
1 changed files with 1 additions and 1 deletions
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2
tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args_type.tc
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@ -26,7 +26,7 @@ check_types() {
test $X2 = $X3 test $X2 = $X3
test 0x$X3 = $3 test 0x$X3 = $3
B4=`printf "%x" $4` B4=`printf "%02x" $4`
B3=`echo -n $X3 | tail -c 3 | head -c 2` B3=`echo -n $X3 | tail -c 3 | head -c 2`
test $B3 = $B4 test $B3 = $B4
} }