; Run llvm-undname with invalid inputs and make sure it doesn't crash.
; RUN: llvm-undname < %s 2>&1 | FileCheck %s

?ff@@$$J0YAXAU?$AS_@$0A@PEAU?$AS_@$0A@H@__clang@@@__clang@@@Z
; CHECK: ?ff@@$$J0YAXAU?$AS_@$0A@PEAU?$AS_@$0A@H@__clang@@@__clang@@@Z
; CHECK-NEXT: error: Invalid mangled name

?f0@@YAXPEU?$AS_@$00$$CAD@__clang@@@Z
; CHECK-EMPTY:
; CHECK-NEXT: ?f0@@YAXPEU?$AS_@$00$$CAD@__clang@@@Z
; CHECK-NEXT: error: Invalid mangled name

?@@8
; CHECK-EMPTY:
; CHECK-NEXT: ?@@8
; CHECK-NEXT: error: Invalid mangled name

??
; CHECK-EMPTY:
; CHECK-NEXT: ??
; CHECK-NEXT: error: Invalid mangled name

??0@
; CHECK-EMPTY:
; CHECK-NEXT: ??0@
; CHECK-NEXT: error: Invalid mangled name

? @@   YC@
; CHECK-EMPTY:
; CHECK-NEXT: ? @@   YC@
; CHECK-NEXT: error: Invalid mangled name

??B@$$J0
; CHECK-EMPTY:
; CHECK-NEXT: ??B@$$J0
; CHECK-NEXT: error: Invalid mangled name

??B@4
; CHECK-EMPTY:
; CHECK-NEXT: ??B@4
; CHECK-NEXT: error: Invalid mangled name

?A?@?@???B@4D
; CHECK-EMPTY:
; CHECK-NEXT: ?A?@?@???B@4D
; CHECK-NEXT: error: Invalid mangled name

?A?@?@???B@4DD
; CHECK-EMPTY:
; CHECK-NEXT: ?A?@?@???B@4DD
; CHECK-NEXT: error: Invalid mangled name

??$A@P15@
; CHECK-EMPTY:
; CHECK-NEXT: ??$A@P15@
; CHECK-NEXT: error: Invalid mangled name

??$A@P
; CHECK-EMPTY:
; CHECK-NEXT: ??$A@P
; CHECK-NEXT: error: Invalid mangled name

?A@@
; CHECK-EMPTY:
; CHECK-NEXT: ?A@@
; CHECK-NEXT: error: Invalid mangled name

?A@@P
; CHECK-EMPTY:
; CHECK-NEXT: ?A@@P
; CHECK-NEXT: error: Invalid mangled name

?A@@4PQA@@
; CHECK-EMPTY:
; CHECK-NEXT: ?A@@4PQA@@
; CHECK-NEXT: error: Invalid mangled name

??__E
; CHECK-EMPTY:
; CHECK-NEXT: ??__E
; CHECK-NEXT: error: Invalid mangled name

??__E@@
; CHECK-EMPTY:
; CHECK-NEXT: ??__E@@
; CHECK-NEXT: error: Invalid mangled name

??__E?Foo@@0HA@@
; CHECK-EMPTY:
; CHECK-NEXT: ??__E?Foo@@0HA@@
; CHECK-NEXT: error: Invalid mangled name