fixup! fixup! fixup! Replace relpath with cheaper function

Author: nickrobinson251

test/internals.jl

@@ -395,11 +395,13 @@ end
     @test nestedrelpath(path, "test/dir/other") == "test/dir/foo_test.jl"
     @test nestedrelpath(path, "test/dir/other/bar_test.jl") == "test/dir/foo_test.jl"
 
-    @test 1 >= @allocations(nestedrelpath(path, "test"))
-    @test 1 >= @allocations(nestedrelpath(path, "test/dir"))
-    @test 0 == @allocations(nestedrelpath(path, "test/dir/foo_test.jl"))
-    @test 0 == @allocations(nestedrelpath(path, "test/dir/other"))
-    @test 0 == @allocations(nestedrelpath(path, "test/dir/other/bar_test.jl"))
+    if isdefined(Base, Symbol("@allocations")) # added in Julia v1.9
+        @test 1 >= @allocations(nestedrelpath(path, "test"))
+        @test 1 >= @allocations(nestedrelpath(path, "test/dir"))
+        @test 0 == @allocations(nestedrelpath(path, "test/dir/foo_test.jl"))
+        @test 0 == @allocations(nestedrelpath(path, "test/dir/other"))
+        @test 0 == @allocations(nestedrelpath(path, "test/dir/other/bar_test.jl"))
+    end
 end
 
 end # internals.jl testset