Const correctness

src/accessor/grib_accessor_class_signed.cc

@@ -199,17 +199,16 @@ long grib_accessor_class_signed_t::next_offset(grib_accessor* a)
 
 int grib_accessor_class_signed_t::is_missing(grib_accessor* a)
 {
-    int i                = 0;
     unsigned char ff = 0xff;
     unsigned long offset = a->offset;
-    grib_handle* hand    = grib_handle_of_accessor(a);
+    const grib_handle* hand = grib_handle_of_accessor(a);
 
     if (a->length == 0) {
         Assert(a->vvalue != NULL);
         return a->vvalue->missing;
     }
 
-    for (i = 0; i < a->length; i++) {
+    for (long i = 0; i < a->length; i++) {
         if (hand->buffer->data[offset] != ff)
             return 0;
         offset++;

src/accessor/grib_accessor_class_uint64.cc

@@ -18,7 +18,7 @@ int grib_accessor_class_uint64_t::unpack_long(grib_accessor* a, long* val, size_
 {
     long value = 0;
     long pos = a->offset;
-    unsigned char* data       = grib_handle_of_accessor(a)->buffer->data;
+    const unsigned char* data = grib_handle_of_accessor(a)->buffer->data;
     unsigned long long result = 0, tmp;
     int i;
 

src/accessor/grib_accessor_class_uint64_little_endian.cc

@@ -18,15 +18,14 @@ int grib_accessor_class_uint64_little_endian_t::unpack_long(grib_accessor* a, lo
 {
     long value = 0;
     long pos = a->offset;
-    unsigned char* data       = grib_handle_of_accessor(a)->buffer->data;
+    const unsigned char* data = grib_handle_of_accessor(a)->buffer->data;
     unsigned long long result = 0, tmp;
-    int i;
 
     if (*len < 1) {
         return GRIB_ARRAY_TOO_SMALL;
     }
 
-    for (i = 7; i >= 0; i--) {
+    for (int i = 7; i >= 0; i--) {
         result <<= 8;
         result |= data[pos + i];
     }

src/accessor/grib_accessor_class_uint8.cc

@@ -18,7 +18,7 @@ int grib_accessor_class_uint8_t::unpack_long(grib_accessor* a, long* val, size_t
 {
     long value = 0;
     long pos   = a->offset;
-    unsigned char* data = grib_handle_of_accessor(a)->buffer->data;
+    const unsigned char* data = grib_handle_of_accessor(a)->buffer->data;
 
     if (*len < 1) {
         return GRIB_ARRAY_TOO_SMALL;

src/accessor/grib_accessor_class_unsigned.cc

@@ -162,7 +162,7 @@ int pack_long_unsigned_helper(grib_accessor* a, const long* val, size_t* len, in
 
 int grib_accessor_class_unsigned_t::unpack_long(grib_accessor* a, long* val, size_t* len)
 {
-    grib_accessor_unsigned_t* self = (grib_accessor_unsigned_t*)a;
+    const grib_accessor_unsigned_t* self = (grib_accessor_unsigned_t*)a;
 
     long rlen             = 0;
     unsigned long i       = 0;
@@ -245,7 +245,7 @@ int grib_accessor_class_unsigned_t::is_missing(grib_accessor* a)
 {
     const unsigned char ff = 0xff;
     unsigned long offset = a->offset;
-    grib_handle* hand    = grib_handle_of_accessor(a);
+    const grib_handle* hand = grib_handle_of_accessor(a);
 
     if (a->length == 0) {
         Assert(a->vvalue != NULL);