From 0631ca3a6e6edd23a2ca7cab707d1abf291a097d Mon Sep 17 00:00:00 2001 From: Adrian Hunter Date: Thu, 22 Nov 2018 13:29:37 +0200 Subject: [PATCH] tools lib traceevent: Fix compile warnings in tools/lib/traceevent/event-parse.c MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Fix following warnings: event-parse.c: In function ‘tep_find_event_by_name’: event-parse.c:3521:21: warning: ‘event’ may be used uninitialized in this function [-Wmaybe-uninitialized] pevent->last_event = event; ~~~~~~~~~~~~~~~~~~~^~~~~~~ CC ui/gtk/hists.o LINK plugin_mac80211.so CC nlattr.o event-parse.c: In function ‘tep_data_lat_fmt’: event-parse.c:5200:4: warning: ‘migrate_disable’ may be used uninitialized in this function [-Wmaybe-uninitialized] trace_seq_printf(s, "%d", migrate_disable); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ event-parse.c:5207:4: warning: ‘lock_depth’ may be used uninitialized in this function [-Wmaybe-uninitialized] trace_seq_printf(s, "%d", lock_depth); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ LINK plugin_sched_switch.so LINK plugin_function.so LINK plugin_xen.so event-parse.c: In function ‘tep_event_info’: event-parse.c:5047:7: warning: ‘len_arg’ may be used uninitialized in this function [-Wmaybe-uninitialized] trace_seq_printf(s, format, len_arg, (char)val); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ event-parse.c:4884:6: note: ‘len_arg’ was declared here int len_arg; ^~~~~~~ event-parse.c:4338:11: warning: ‘vsize’ may be used uninitialized in this function [-Wmaybe-uninitialized] val = tep_read_number(pevent, bptr, vsize); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ event-parse.c:4224:6: note: ‘vsize’ was declared here int vsize; ^~~~~ $ gcc --version gcc (Clear Linux OS for Intel Architecture) 8.2.1 20180502 Signed-off-by: Adrian Hunter Cc: Jiri Olsa Cc: Steven Rostedt (VMware) Cc: Tzvetomir Stoyanov (VMware) Link: http://lkml.kernel.org/r/20181122112937.10582-1-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/lib/traceevent/event-parse.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/tools/lib/traceevent/event-parse.c b/tools/lib/traceevent/event-parse.c index 3692f29fee46..fbd6d6813fab 100644 --- a/tools/lib/traceevent/event-parse.c +++ b/tools/lib/traceevent/event-parse.c @@ -3498,7 +3498,7 @@ struct tep_event_format * tep_find_event_by_name(struct tep_handle *pevent, const char *sys, const char *name) { - struct tep_event_format *event; + struct tep_event_format *event = NULL; int i; if (pevent->last_event && @@ -4221,7 +4221,7 @@ static struct tep_print_arg *make_bprint_args(char *fmt, void *data, int size, s unsigned long long ip, val; char *ptr; void *bptr; - int vsize; + int vsize = 0; field = pevent->bprint_buf_field; ip_field = pevent->bprint_ip_field; @@ -4881,7 +4881,7 @@ static void pretty_print(struct trace_seq *s, void *data, int size, struct tep_e char format[32]; int show_func; int len_as_arg; - int len_arg; + int len_arg = 0; int len; int ls; @@ -5146,8 +5146,8 @@ void tep_data_lat_fmt(struct tep_handle *pevent, static int migrate_disable_exists; unsigned int lat_flags; unsigned int pc; - int lock_depth; - int migrate_disable; + int lock_depth = 0; + int migrate_disable = 0; int hardirq; int softirq; void *data = record->data;