Fix #427 on gcc-8 and above.

This patch fixes OpenCoarrays sendget_by_ref() operator by using the
types of src and dst during execution. These types are only handed to
the function by a gcc >= 8.

Fixes #427.

Author: vehre

src/libcaf.h

@@ -250,23 +250,39 @@ void PREFIX (caf_send) (caf_token_t, size_t, int, gfc_descriptor_t *,
                         int *);
 
 void PREFIX (caf_sendget) (caf_token_t, size_t, int, gfc_descriptor_t *,
-			   caf_vector_t *, caf_token_t, size_t, int,
-			   gfc_descriptor_t *, caf_vector_t *, int, int, bool,
-			   int *);
+                           caf_vector_t *, caf_token_t, size_t, int,
+                           gfc_descriptor_t *, caf_vector_t *, int, int, bool,
+                           int *);
 
-#ifdef GCC_GE_7
+#ifdef GCC_GE_8
 void PREFIX(get_by_ref) (caf_token_t, int,
-							 gfc_descriptor_t *dst, caf_reference_t *refs,
-							 int dst_kind, int src_kind, bool may_require_tmp,
-							 bool dst_reallocatable, int *stat);
+                         gfc_descriptor_t *dst, caf_reference_t *refs,
+                         int dst_kind, int src_kind, bool may_require_tmp,
+                         bool dst_reallocatable, int *stat, int src_type);
 void PREFIX(send_by_ref) (caf_token_t token, int image_index,
-							  gfc_descriptor_t *src, caf_reference_t *refs,
-							  int dst_kind, int src_kind, bool may_require_tmp,
-							  bool dst_reallocatable, int *stat);
+                          gfc_descriptor_t *src, caf_reference_t *refs,
+                          int dst_kind, int src_kind, bool may_require_tmp,
+                          bool dst_reallocatable, int *stat, int dst_type);
 void PREFIX(sendget_by_ref) (caf_token_t dst_token, int dst_image_index,
-		caf_reference_t *dst_refs, caf_token_t src_token, int src_image_index,
-		caf_reference_t *src_refs, int dst_kind, int src_kind,
-		bool may_require_tmp, int *dst_stat, int *src_stat);
+                             caf_reference_t *dst_refs, caf_token_t src_token, int src_image_index,
+                             caf_reference_t *src_refs, int dst_kind, int src_kind,
+                             bool may_require_tmp, int *dst_stat, int *src_stat,
+                             int dst_type, int src_type);
+#elif defined(GCC_GE_7)
+void PREFIX(get_by_ref) (caf_token_t, int,
+                         gfc_descriptor_t *dst, caf_reference_t *refs,
+                         int dst_kind, int src_kind, bool may_require_tmp,
+                         bool dst_reallocatable, int *stat);
+void PREFIX(send_by_ref) (caf_token_t token, int image_index,
+                          gfc_descriptor_t *src, caf_reference_t *refs,
+                          int dst_kind, int src_kind, bool may_require_tmp,
+                          bool dst_reallocatable, int *stat);
+void PREFIX(sendget_by_ref) (caf_token_t dst_token, int dst_image_index,
+                             caf_reference_t *dst_refs, caf_token_t src_token, int src_image_index,
+                             caf_reference_t *src_refs, int dst_kind, int src_kind,
+                             bool may_require_tmp, int *dst_stat, int *src_stat);
+#endif
+#ifdef GCC_GE_7
 int PREFIX(is_present) (caf_token_t, int, caf_reference_t *refs);
 #endif