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-rw-r--r--gaspressures.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/gaspressures.c b/gaspressures.c
index 58e570423..4edcf7e35 100644
--- a/gaspressures.c
+++ b/gaspressures.c
@@ -271,6 +271,8 @@ static void fill_missing_tank_pressures(struct dive *dive, struct plot_info *pi,
if (o2_flag) {
// Find the cylinder index (cyl) and pressure
cyl = dive->oxygen_cylinder_index;
+ if (cyl < 0)
+ return; // Can we do this?!?
pressure = O2CYLINDER_PRESSURE(entry);
save_pressure = &(entry->o2cylinderpressure[SENSOR_PR]);
save_interpolated = &(entry->o2cylinderpressure[INTERPOLATED_PR]);
@@ -374,6 +376,8 @@ void populate_pressure_information(struct dive *dive, struct divecomputer *dc, s
if (o2_flag) { // if this is a diluent cylinder:
pressure = O2CYLINDER_PRESSURE(entry);
cylinderid = dive->oxygen_cylinder_index;
+ if (cylinderid < 0)
+ goto GIVE_UP;
} else {
pressure = SENSOR_PRESSURE(entry);
cylinderid = entry->cylinderindex;
@@ -424,6 +428,7 @@ void populate_pressure_information(struct dive *dive, struct divecomputer *dc, s
debug_print_pressures(pi);
#endif
+GIVE_UP:
for (i = 0; i < MAX_CYLINDERS; i++)
list_free(track_pr[i]);
}