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authorArnaldo Carvalho de Melo <acme@redhat.com>2017-02-13 13:33:57 -0300
committerArnaldo Carvalho de Melo <acme@redhat.com>2017-02-13 17:22:33 -0300
commite8c6f437fd12d39e462962eaed2315bac597d34c (patch)
tree42e067a7c8051ca2af93ddb4dd9e68c52f3285d0 /tools/lib/traceevent
parent14e4d7e0abfdefabea2b8796c5a8b2b9c77b5326 (diff)
tools lib traceevent plugin function: Initialize 'index' variable
Detected with clang: CC /tmp/build/perf/plugin_function.o plugin_function.c:145:6: warning: variable 'index' is used uninitialized whenever 'if' condition is false [-Wsometimes-uninitialized] if (parent && ftrace_indent->set) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ plugin_function.c:148:29: note: uninitialized use occurs here trace_seq_printf(s, "%*s", index*3, ""); ^~~~~ plugin_function.c:145:2: note: remove the 'if' if its condition is always true if (parent && ftrace_indent->set) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ plugin_function.c:145:6: warning: variable 'index' is used uninitialized whenever '&&' condition is false [-Wsometimes-uninitialized] if (parent && ftrace_indent->set) ^~~~~~ plugin_function.c:148:29: note: uninitialized use occurs here trace_seq_printf(s, "%*s", index*3, ""); ^~~~~ plugin_function.c:145:6: note: remove the '&&' if its condition is always true if (parent && ftrace_indent->set) ^~~~~~~~~ plugin_function.c:133:11: note: initialize the variable 'index' to silence this warning int index; ^ = 0 2 warnings generated. Reviewed-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-b5wyjocel55gorl2jq2cbxrr@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/lib/traceevent')
-rw-r--r--tools/lib/traceevent/plugin_function.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/tools/lib/traceevent/plugin_function.c b/tools/lib/traceevent/plugin_function.c
index a00ec190821a..42dbf73758f3 100644
--- a/tools/lib/traceevent/plugin_function.c
+++ b/tools/lib/traceevent/plugin_function.c
@@ -130,7 +130,7 @@ static int function_handler(struct trace_seq *s, struct pevent_record *record,
unsigned long long pfunction;
const char *func;
const char *parent;
- int index;
+ int index = 0;
if (pevent_get_field_val(s, event, "ip", record, &function, 1))
return trace_seq_putc(s, '!');