Added warn_unused to struct GridDesciption.

src/griddes.cc

@@ -23,7 +23,6 @@
 #include <cdi.h>
 
 #include "cdo_options.h"
-#include "dmemory.h"
 #include "process_int.h"
 #include "cdo_cdi_wrapper.h"
 #include "griddes.h"
@@ -505,7 +504,7 @@ cdoDefineGrid(const char *pgridfile)
       if (gridID == -1) cdoAbort("Invalid grid description file %s!", filename);
     }
 
-  if (lalloc) Free(filename);
+  if (lalloc) free(filename);
   free(gridfile);
 
   return gridID;

src/griddes.h

@@ -23,7 +23,11 @@
 
 constexpr double undef_grid_value = 9.e20;
 
-struct GridDesciption
+struct // GridDesciption
+#ifdef  __GNUG__
+__attribute__((warn_unused))
+#endif
+GridDesciption
 {
   std::vector<int> mask;
   std::vector<double> xvals;
@@ -35,7 +39,7 @@ struct GridDesciption
   double xfirst = undef_grid_value, yfirst = undef_grid_value;
   double xlast = undef_grid_value, ylast = undef_grid_value;
   double xinc = undef_grid_value, yinc = undef_grid_value;
-  double xpole = 0, ypole = 0, angle = 0;  // rotated north pole
+  double xpole = 0.0, ypole = 0.0, angle = 0.0;  // rotated north pole
   int scanningMode = 64;
   /*
     scanningMode  = 128 * iScansNegatively + 64 * jScansPositively + 32 * jPointsAreConsecutive;
@@ -44,7 +48,7 @@ struct GridDesciption
               96  = 128 * 0                + 64 *        1         + 32 * 1
     Default  implicit scanning mode is 64: i and j scan positively, i points are consecutive (row-major)
   */
-  double a = 0;
+  double a = 0.0;
   int isRotated = 0;  // true for rotated grids
   int datatype = CDI_UNDEFID;
   int type = CDI_UNDEFID;