2 files changed, 12 insertions, 4 deletions

diff --git a/lib/utils_base.c b/lib/utils_base.c
index 3dae32f..18fb3f2 100644
--- a/lib/utils_base.c
+++ b/lib/utils_base.c
@@ -96,12 +96,12 @@ _set_thresholds(thresholds **my_thresholds, char *warn_string, char *critical_st
 
         if (warn_string != NULL) {
                 if ((temp_thresholds->warning = parse_range_string(warn_string)) == NULL) {
-                        return 1;
+                        return NP_RANGE_UNPARSEABLE;
                 }
         }
         if (critical_string != NULL) {
                 if ((temp_thresholds->critical = parse_range_string(critical_string)) == NULL) {
-                        return 1;
+                        return NP_RANGE_UNPARSEABLE;
                 }
         }
 
@@ -117,10 +117,14 @@ _set_thresholds(thresholds **my_thresholds, char *warn_string, char *critical_st
 void
 set_thresholds(thresholds **my_thresholds, char *warn_string, char *critical_string)
 {
-        if (_set_thresholds(my_thresholds, warn_string, critical_string) == 0) {
+        switch (_set_thresholds(my_thresholds, warn_string, critical_string)) {
+        case 0:
                 return;
-        } else {
+        case NP_RANGE_UNPARSEABLE:
                 die(STATE_UNKNOWN, _("Range format incorrect"));
+        case NP_WARN_WITHIN_CRIT:
+                die(STATE_UNKNOWN, _("Warning level is a subset of critical and will not be alerted"));
+                break;
         }
 }
 
diff --git a/lib/utils_base.h b/lib/utils_base.h
index 113e304..44ed0a3 100644
--- a/lib/utils_base.h
+++ b/lib/utils_base.h
@@ -38,4 +38,8 @@ char *np_escaped_string (const char *);
 
 void die (int, const char *, ...) __attribute__((noreturn,format(printf, 2, 3)));
 
+/* Return codes for _set_thresholds */
+#define NP_RANGE_UNPARSEABLE 1
+#define NP_WARN_WITHIN_CRIT 2
+
 #endif /* _UTILS_BASE_ */