From: Uwe Hermann <redacted>
Date: Sat, 24 Jun 2017 15:23:56 +0000 (+0200)
Subject: input/raw_analog: Fix gcc 7 compiler warnings.
X-Git-Url: https://sigrok.org/gitaction?a=commitdiff_plain;h=41b8fca1a16479ebe2761fa63f0dcb86f0bb4c8f;p=libsigrok.git

input/raw_analog: Fix gcc 7 compiler warnings.

  ../src/input/raw_analog.c: In function ‘init’:
  ../src/input/raw_analog.c:133:31: warning: ‘%d’ directive output may be truncated writing between 1 and 10 bytes into a region of size 6 [-Wformat-truncation=]
     snprintf(channelname, 8, "CH%d", i + 1);
                                 ^~
  ../src/input/raw_analog.c:133:28: note: directive argument in the range [1, 2147483647]
     snprintf(channelname, 8, "CH%d", i + 1);
                              ^~~~~~
  ../src/input/raw_analog.c:133:3: note: ‘snprintf’ output between 4 and 13 bytes into a destination of size 8
     snprintf(channelname, 8, "CH%d", i + 1);
     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
---

diff --git a/src/input/raw_analog.c b/src/input/raw_analog.c
index 95b1d669..f6a02635 100644
--- a/src/input/raw_analog.c
+++ b/src/input/raw_analog.c
@@ -105,7 +105,7 @@ static int init(struct sr_input *in, GHashTable *options)
 {
 	struct context *inc;
 	int num_channels;
-	char channelname[8];
+	char channelname[16];
 	const char *format;
 	int fmt_index;
 
@@ -130,7 +130,7 @@ static int init(struct sr_input *in, GHashTable *options)
 	in->priv = inc = g_malloc0(sizeof(struct context));
 
 	for (int i = 0; i < num_channels; i++) {
-		snprintf(channelname, 8, "CH%d", i + 1);
+		snprintf(channelname, sizeof(channelname) - 1, "CH%d", i + 1);
 		sr_channel_new(in->sdi, i, SR_CHANNEL_ANALOG, TRUE, channelname);
 	}