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perf probe: Check if *ptr2 is zero and not ptr2

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Static anaylsis with cppcheck[1] detected an incorrect comparison:
[tools/perf/util/probe-event.c:216]: (warning) Char literal compared
with pointer 'ptr2'. Did you intend to dereference it?

Dereference ptr2 for the comparison to fix this.

1: https://sourceforge.net/p/cppcheck/wiki/Home/

Signed-off-by: Colin King <colin.king@canonical.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ravi Bangoria <ravi.bangoria@linux.vnet.ibm.com>
Cc: Wang Nan <wangnan0@huawei.com>
Fixes: 35726d3a4ca9 ("perf probe: Fix to cut off incompatible chars from group name")
Link: http://lkml.kernel.org/r/20161003103431.18534-1-colin.king@canonical.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Colin Ian King 2016-10-03 11:34:31 +01:00 committed by Arnaldo Carvalho de Melo
parent 41aad2a6d4
commit ead1a57457
1 changed files with 1 additions and 1 deletions
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2
tools/perf/util/probe-event.c
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@ -213,7 +213,7 @@ static int convert_exec_to_group(const char *exec, char **result)
goto out;
}
for (ptr2 = ptr1; ptr2 != '\0'; ptr2++) {
for (ptr2 = ptr1; *ptr2 != '\0'; ptr2++) {
if (!isalnum(*ptr2) && *ptr2 != '_') {
*ptr2 = '\0';
break;