Inference test

Author: YingboMa

Project.toml

@@ -15,7 +15,7 @@ StaticArrays = "90137ffa-7385-5640-81b9-e52037218182"
 [compat]
 Cassette = "0.3.0"
 ChainRules = "0.3"
-ChainRulesCore = "0.5.1"
+ChainRulesCore = "0.5"
 StaticArrays = "0.11, 0.12"
 
 [extras]

test/api.jl

@@ -15,4 +15,7 @@ using StaticArrays
     # Hessian
     @test D(D(x->x[1]^x[2] + x[3]^3 + x[3]*x[2]*x[1]))(@SVector[1,2,3]) === @SMatrix [2 4 2; 4 0 1; 2 1 18.]
     @test D(D(x->x[1]^x[2] + x[3]^3 + x[3]*x[2]*x[1]))([1,2,3]) == [2 4 2; 4 0 1; 2 1 18.]
+    # inference
+    # broken due to `Core._apply`
+    @test_broken @inferred D(x->exp(x) + x^x + cos(x) + tan(x) + 2^x + log(cos(x)) + sec(pi*x) - angle(x) + one(x) / log1p(sin(x)))(1)
 end