chart: Fix format string issues in draw_tick callers.

[pspp-builds.git] / src / output / charts / plot-chart.h

diff --git a/src/output/charts/plot-chart.h b/src/output/charts/plot-chart.h
index f29b4a35d1d74280325bedf0d10941cfbdcdfff1..9a4df52052392cf1769dc1d2bade682a95af1e18 100644 (file)
--- a/src/output/charts/plot-chart.h
+++ b/src/output/charts/plot-chart.h
@@ -52,7 +52,8 @@ enum tick_orientation
 void draw_tick(struct chart *chart,
          enum tick_orientation orientation,
          double position,
-              const char *label, ...);
+              const char *label, ...)
+  PRINTF_FORMAT (4, 5);
 
 
 /* Write the title on a chart*/