| // RUN: rm -rf %t | |
| // RUN: mkdir %t | |
| // RUN: %target-swift-frontend -emit-module -o %t %S/Inputs/def_structA.swift | |
| // RUN: %target-swift-frontend -emit-silgen -module-name ext_structA -I %t %s | FileCheck %s | |
| import def_structA | |
| extension A { | |
| mutating func test() { | |
| a = 1 | |
| } | |
| } | |
| func markUsed<T>(t: T) {} | |
| // CHECK-LABEL: sil hidden @_TFE11ext_structAV11def_structA1A4testfT_T_ | |
| var ao = A() | |
| markUsed(ao.test()) |