Use bool for two-state value.

src/vlist.h

@@ -9,6 +9,7 @@
 #include "error.h"
 #endif
 
+#include <stdbool.h>
 #include <stddef.h> /* size_t */
 
 #ifndef CDI_LIMITS_H
@@ -46,6 +47,7 @@ typedef struct
 {
   bool isUsed;
   bool flag;
+  bool lvalidrange;
   short xyz; /* order of spatial dimensions,
               * a permutation of 123 */
   int mvarID;
@@ -62,7 +64,6 @@ typedef struct
   int timave;
   int nsb;           // Number of significant bits
   bool missvalused;  // true if missval is defined
-  bool lvalidrange;
   double missval;
   double validrange[2];
   levinfo_t *levinfo;

src/vlist_var.c

@@ -14,6 +14,7 @@ vlistvarInitEntry(int vlistID, int varID)
 {
   vlist_t *vlistptr = vlist_to_pointer(vlistID);
 
+  vlistptr->vars[varID].lvalidrange = false;
   vlistptr->vars[varID].fvarID = varID;
   vlistptr->vars[varID].mvarID = varID;
   vlistptr->vars[varID].flag = 0;
@@ -39,7 +40,6 @@ vlistvarInitEntry(int vlistID, int varID)
   for (int i = 0; i < MAX_KEYS; ++i) vlistptr->vars[varID].keys.value[i].length = 0;
   vlistptr->vars[varID].atts.nalloc = MAX_ATTRIBUTES;
   vlistptr->vars[varID].atts.nelems = 0;
-  vlistptr->vars[varID].lvalidrange = false;
   vlistptr->vars[varID].validrange[0] = VALIDMISS;
   vlistptr->vars[varID].validrange[1] = VALIDMISS;
   vlistptr->vars[varID].iorank = CDI_UNDEFID;