TEST: Register array_21.cpp

Author: czgdp1807

integration_tests/CMakeLists.txt

@@ -218,3 +218,5 @@ RUN(NAME array_19.cpp LABELS gcc llvm NOFAST
     EXTRA_ARGS --extra-arg=-I${CONDA_PREFIX}/include)
 RUN(NAME array_20.cpp LABELS gcc llvm NOFAST
     EXTRA_ARGS --extra-arg=-I${CONDA_PREFIX}/include)
+RUN(NAME array_21.cpp LABELS gcc llvm NOFAST
+    EXTRA_ARGS --extra-arg=-I${CONDA_PREFIX}/include)