Fix use of uninitialized variable if there are no samples

[ext/subsurface.git] / profile.c

diff --git a/profile.c b/profile.c
index 56716f5f767c11646d0edaade51d2b9b4d1b427f..41650b794bef7cf56838d43d8e6a22db0e08113b 100644 (file)
--- a/profile.c
+++ b/profile.c
@@ -1010,7 +1010,7 @@ static struct plot_info *create_plot_info(struct dive *dive)
        pr_track_t *track_pr[MAX_CYLINDERS] = {NULL, };
        pr_track_t *pr_track, *current;
        gboolean missing_pr = FALSE;
-       struct plot_data *entry;
+       struct plot_data *entry = NULL;
 
        pi = malloc(alloc_size);
        if (!pi)
@@ -1043,7 +1043,7 @@ static struct plot_info *create_plot_info(struct dive *dive)
 
        for (cyl = 0; cyl < MAX_CYLINDERS; cyl++) /* initialize the start pressures */
                track_pr[cyl] = pr_track_alloc(dive->cylinder[cyl].start.mbar, -1);
-       current = track_pr[dive->sample[0].cylinderindex];
+       current = track_pr[pi->entry[2].cylinderindex];
        for (i = 0; i < dive->samples; i++) {
                entry = pi->entry + i + 2;
 
@@ -1073,7 +1073,9 @@ static struct plot_info *create_plot_info(struct dive *dive)
                missing_pr |= !SENSOR_PRESSURE(entry);
        }
 
-       current->t_end = entry->sec;
+       if (entry)
+               current->t_end = entry->sec;
+
        for (cyl = 0; cyl < MAX_CYLINDERS; cyl++) { /* initialize the end pressures */
                int pr = dive->cylinder[cyl].end.mbar;
                if (pr && track_pr[cyl]) {