Fix incorrect type for lib extern static array

asterite · asterite · commit 30864196acee · 2018-02-08T09:39:59.000-03:00
diff --git a/spec/compiler/codegen/lib_spec.cr b/spec/compiler/codegen/lib_spec.cr
@@ -227,4 +227,14 @@ describe "Code gen: lib" do
       LibFoo.foo(x)
       ))
   end
+
+  it "uses static array in lib extern (#5688)" do
+    codegen(%(
+      lib LibFoo
+        $x : Int32[10]
+      end
+
+      LibFoo.x
+      ))
+  end
 end
diff --git a/src/compiler/crystal/codegen/llvm_typer.cr b/src/compiler/crystal/codegen/llvm_typer.cr
@@ -452,6 +452,12 @@ module Crystal
       end
     end
 
+    # StaticArray can only be "returned" in lib externs,
+    # not in C functions, and there it must not be a pointer.
+    def llvm_c_return_type(type : StaticArrayInstanceType)
+      llvm_struct_type(type)
+    end
+
     def llvm_c_return_type(type : NilType)
       @llvm_context.void
     end
