X-Git-Url: http://sigrok.org/gitweb/?a=blobdiff_plain;f=output%2Foutput_gnuplot.c;h=09a42ad65568977c1a6e481705c26f2feda4eb72;hb=54ac5277c5e462f1778300b9bc3fdd4709ecb2dc;hp=10b9c2647eea6bab64595cd6c2a77f0c5d298a29;hpb=809c5f2011198a064a2e5e4028f19e63eb532ec1;p=libsigrok.git

diff --git a/output/output_gnuplot.c b/output/output_gnuplot.c
index 10b9c264..09a42ad6 100644
--- a/output/output_gnuplot.c
+++ b/output/output_gnuplot.c
@@ -141,7 +141,7 @@ static int event(struct sr_output *o, int event_type, char **data_out,
 	return SR_OK;
 }
 
-static int data(struct sr_output *o, char *data_in, uint64_t length_in,
+static int data(struct sr_output *o, const char *data_in, uint64_t length_in,
 		char **data_out, uint64_t *length_out)
 {
 	struct context *ctx;