From: Slavomir Kaslev <kaslevs@vmware.com>
To: linux-trace-devel@vger.kernel.org
Cc: rostedt@goodmis.org, ykaradzhov@vmware.com, tstoyanov@vmware.com
Subject: [PATCH v2 2/6] trace-cmd: Fix warnings reported by gcc 8.2
Date: Tue, 8 Jan 2019 17:00:11 +0200 [thread overview]
Message-ID: <20190108150015.21327-3-kaslevs@vmware.com> (raw)
In-Reply-To: <20190108150015.21327-1-kaslevs@vmware.com>
Compiling trace-cmd with gcc 8.2 reports:
trace-read.c: In function ‘append_pid_filter’:
trace-read.c:414:3: warning: passing argument 1 to restrict-qualified parameter aliases with argument 3 [-Wrestrict]
sprintf(filter, "%s||" FILTER_FMT, filter, pid, pid, pid);
^~~~~~~
since `snprintf` declares its first argument as __restrict but `buf` is also
passed as argument #5.
Signed-off-by: Slavomir Kaslev <kaslevs@vmware.com>
---
tracecmd/trace-read.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/tracecmd/trace-read.c b/tracecmd/trace-read.c
index c406d66..1f91fff 100644
--- a/tracecmd/trace-read.c
+++ b/tracecmd/trace-read.c
@@ -386,7 +386,7 @@ static void add_pid_filter(const char *arg)
static char *append_pid_filter(char *curr_filter, char *pid)
{
char *filter;
- int len;
+ int len, curr_len;
#define FILTER_FMT "(common_pid==" __STR ")||(pid==" __STR ")||(next_pid==" __STR ")"
@@ -405,13 +405,13 @@ static char *append_pid_filter(char *curr_filter, char *pid)
die("Failed to allocate for filter %s", curr_filter);
sprintf(filter, ".*:" FILTER_FMT, pid, pid, pid);
} else {
-
- len += strlen(curr_filter);
+ curr_len = strlen(curr_filter);
+ len += curr_len;
filter = realloc(curr_filter, len);
if (!filter)
die("realloc");
- sprintf(filter, "%s||" FILTER_FMT, filter, pid, pid, pid);
+ sprintf(filter + curr_len, "||" FILTER_FMT, pid, pid, pid);
}
return filter;
--
2.19.1
next prev parent reply other threads:[~2019-01-08 15:00 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-08 15:00 [PATCH v2 0/6] Add VM guest kernel tracing using vsock sockets for transport Slavomir Kaslev
2019-01-08 15:00 ` [PATCH v2 1/6] trace-cmd: Fix indentation Slavomir Kaslev
2019-01-08 15:00 ` Slavomir Kaslev [this message]
2019-01-08 22:32 ` [PATCH v2 2/6] trace-cmd: Fix warnings reported by gcc 8.2 Steven Rostedt
2019-01-08 15:00 ` [PATCH v2 3/6] trace-cmd: Add tracecmd_create_recorder_virt function Slavomir Kaslev
2019-01-08 15:00 ` [PATCH v2 4/6] trace-cmd: Simplify and fix memory leaks in tracecmd_msg_collect_data Slavomir Kaslev
2019-01-08 22:40 ` Steven Rostedt
2019-01-08 15:00 ` [PATCH v2 5/6] trace-cmd: Add TRACE_REQ and TRACE_RESP messages Slavomir Kaslev
2019-01-08 23:01 ` Steven Rostedt
2019-01-08 15:00 ` [PATCH v2 6/6] trace-cmd: Add VM kernel tracing using vsock socket for transport Slavomir Kaslev
2019-01-09 21:20 ` [PATCH v2 0/6] Add VM guest kernel tracing using vsock sockets " Steven Rostedt
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