RUN: llvm-cxxfilt -_ ___imp__ZSt6futureIvE | FileCheck %s
RUN: llvm-cxxfilt -n __imp__ZSt6futureIvE | FileCheck %s

## This should not demangle
RUN: llvm-cxxfilt -n __imp__foo | FileCheck %s --check-prefix=CHECK-STRING --match-full-lines

RUN: echo "__imp__ZSt6futureIvE __imp__ZSt6futureIvE" | llvm-cxxfilt -n | \
RUN:    FileCheck %s --check-prefix=CHECK-SPLIT

CHECK: import thunk for std::future<void>
CHECK-STRING: __imp__foo
CHECK-SPLIT: import thunk for std::future<void> import thunk for std::future<void>