Fixed segfault

elementary/benchmark/main.c

@@ -37,10 +37,13 @@ double compute_next_chunk_elems(struct dispatch_context *dc, struct futhark_cont
     for (int i = 0; i < N_ITERATIONS; ++i) {
         futhark_entry_next_chunk_elems(fc, &fut_next_chunk_elems, fut_chunk_with_envelope);
         futhark_context_sync(fc);
-        futhark_free_i8_1d(fc, fut_next_chunk_elems);
+        if (i + 1 < N_ITERATIONS) {
+            futhark_free_i8_1d(fc, fut_next_chunk_elems);
+        }
     }
     futhark_values_i8_1d(fc, fut_next_chunk_elems, ci->data);
     futhark_context_sync(fc);
+    futhark_free_i8_1d(fc, fut_next_chunk_elems);
     futhark_free_i8_1d(fc, fut_chunk_with_envelope);
     double finish = MPI_Wtime();
 

game_of_life/benchmark/main.c

@@ -41,10 +41,13 @@ double compute_next_chunk_board(struct dispatch_context *dc, struct futhark_cont
     for (int i = 0; i < N_ITERATIONS; ++i) {
         futhark_entry_next_chunk_board(fc, &fut_next_chunk_board, fut_chunk_with_envelope);
         futhark_context_sync(fc);
-        futhark_free_i8_2d(fc, fut_next_chunk_board);
+        if (i + 1 < N_ITERATIONS) {
+            futhark_free_i8_2d(fc, fut_next_chunk_board);
+        }
     }
     futhark_values_i8_2d(fc, fut_next_chunk_board, ci->data);
     futhark_context_sync(fc);
+    futhark_free_i8_2d(fc, fut_next_chunk_board);
     futhark_free_i8_2d(fc, fut_chunk_with_envelope);
     double finish = MPI_Wtime();
 

lattice_boltzmann/main.c

@@ -49,10 +49,13 @@ double compute_next_lbm(struct dispatch_context *dc, struct futhark_context *fc,
     for (int i = 0; i < N_ITERATIONS; ++i) {
         futhark_entry_next_chunk_lbm(fc, &fut_next_chunk_lbm, fut_chunk_with_envelope);
         futhark_context_sync(fc);
-        futhark_free_f32_4d(fc, fut_next_chunk_lbm);
+        if (i + 1 < N_ITERATIONS) {
+            futhark_free_f32_4d(fc, fut_next_chunk_lbm);
+        }
     }
     futhark_values_f32_4d(fc, fut_next_chunk_lbm, ci->data);
     futhark_context_sync(fc);
+    futhark_free_f32_4d(fc, fut_next_chunk_lbm);
     futhark_free_f32_4d(fc, fut_chunk_with_envelope);
     double finish = MPI_Wtime();