Fix compiler warnings

src/Importobs.cc

@@ -68,8 +68,6 @@ get_date(const char *name)
 class ModuleImportobs
 {
   char line[MAX_LINE_LEN];
-  size_t i, j;
-  long index;
   int nvars = 6;
   int vtime = 0;
   char dummy[32], station[32], datetime[32];
@@ -144,12 +142,13 @@ public:
     taxisID = cdo_taxis_create(TAXIS_ABSOLUTE);
     vlistDefTaxis(vlistID, taxisID);
     data = Varray2D<double>(nvars);
-    for (i = 0; i < nvars; ++i) data[i].resize(gridsize);
+    for (int i = 0; i < nvars; ++i) data[i].resize(gridsize);
 
     init_vars(vlistID, gridID, zaxisID, nvars);
 
     cdo_def_vlist(streamID, vlistID);
   }
+
   void
   run()
   {
@@ -189,15 +188,17 @@ public:
         if (lat > latmax) latmax = lat;
 
         auto dy = yvals[1] - yvals[0];
+        size_t j;
         for (j = 0; j < ysize; ++j)
           if (lat >= (yvals[j] - dy / 2) && lat < (yvals[j] + dy / 2)) break;
 
         auto dx = xvals[1] - xvals[0];
         if (lon < (xvals[0] - dx / 2) && lon < 0) lon += 360;
+        size_t i;
         for (i = 0; i < xsize; ++i)
           if (lon >= (xvals[i] - dx / 2) && lon < (xvals[i] + dx / 2)) break;
 
-        index = -1;
+        long index = -1;
         if (code == 11) index = 0;
         if (code == 17) index = 1;
         if (code == 33) index = 2;
@@ -226,6 +227,7 @@ public:
 
     process_def_var_num(vlistNvars(vlistID));
   }
+
   void
   close()
   {
@@ -241,6 +243,7 @@ public:
     cdo_finish();
   }
 };
+
 void *
 Importobs(void *process)
 {

src/Splitdate.cc

@@ -20,8 +20,6 @@
 
 class ModuleSplitdate
 {
-
-  int noffset;
   CdoStreamID streamID1;
   int taxisID1;
 
@@ -103,6 +101,7 @@ public:
           }
       }
   }
+
   void
   run()
   {
@@ -209,6 +208,7 @@ public:
         tsID2++;
       }
   }
+
   void
   close()
   {
@@ -229,5 +229,6 @@ Splitdate(void *process)
   splitdate.init(process);
   splitdate.run();
   splitdate.close();
+
   return nullptr;
 }

src/json/jsmn.c

@@ -261,7 +261,7 @@ int jsmn_parse(jsmn_parser *parser, const char *js, size_t len)
           break;
         case '\r':
           if ( parser->pos+1 < len && js[parser->pos+1] == '\n' ) parser->pos++;
-          // C++17 [[fallthrough]];
+          // C++20 [[fallthrough]];
         case '\n':
           parser->lineno++;
           break;