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; RUN: llvm-undname < %s | FileCheck %s

; CHECK-NOT: Invalid mangled name

; Test demangling of function local scope discriminator IDs.
?M@?@??L@@YAHXZ@4HA
; CHECK: int `int __cdecl L(void)'::`0'::M

?M@?0??L@@YAHXZ@4HA
; CHECK: int `int __cdecl L(void)'::`1'::M

?M@?1??L@@YAHXZ@4HA
; CHECK: int `int __cdecl L(void)'::`2'::M

?M@?2??L@@YAHXZ@4HA
; CHECK: int `int __cdecl L(void)'::`3'::M

?M@?3??L@@YAHXZ@4HA
; CHECK: int `int __cdecl L(void)'::`4'::M

?M@?4??L@@YAHXZ@4HA
; CHECK: int `int __cdecl L(void)'::`5'::M

?M@?5??L@@YAHXZ@4HA
; CHECK: int `int __cdecl L(void)'::`6'::M

?M@?6??L@@YAHXZ@4HA
; CHECK: int `int __cdecl L(void)'::`7'::M

?M@?7??L@@YAHXZ@4HA
; CHECK: int `int __cdecl L(void)'::`8'::M

?M@?8??L@@YAHXZ@4HA
; CHECK: int `int __cdecl L(void)'::`9'::M

?M@?9??L@@YAHXZ@4HA
; CHECK: int `int __cdecl L(void)'::`10'::M

?M@?L@??L@@YAHXZ@4HA
; CHECK: int `int __cdecl L(void)'::`11'::M

?M@?M@??L@@YAHXZ@4HA
; CHECK: int `int __cdecl L(void)'::`12'::M

?M@?N@??L@@YAHXZ@4HA
; CHECK: int `int __cdecl L(void)'::`13'::M

?M@?O@??L@@YAHXZ@4HA
; CHECK: int `int __cdecl L(void)'::`14'::M

?M@?P@??L@@YAHXZ@4HA
; CHECK: int `int __cdecl L(void)'::`15'::M

?M@?BA@??L@@YAHXZ@4HA
; CHECK: int `int __cdecl L(void)'::`16'::M

?M@?BB@??L@@YAHXZ@4HA
; CHECK: int `int __cdecl L(void)'::`17'::M

?j@?1??L@@YAHXZ@4UJ@@A
; CHECK: struct J `int __cdecl L(void)'::`2'::j

; Test demangling of name back-references
?NN@0XX@@3HA
; CHECK: int XX::NN::NN

?MM@0NN@XX@@3HA
; CHECK: int XX::NN::MM::MM

?NN@MM@0XX@@3HA
; CHECK: int XX::NN::MM::NN

?OO@0NN@01XX@@3HA
; CHECK: int XX::NN::OO::NN::OO::OO

?NN@OO@010XX@@3HA
; CHECK: int XX::NN::OO::NN::OO::NN

; Test demangling of name back-references combined with function local scopes.
?M@?1??0@YAHXZ@4HA
; CHECK: int `int __cdecl M(void)'::`2'::M

?L@?2??M@0?2??0@YAHXZ@QEAAHXZ@4HA
; CHECK: int `public: int __cdecl `int __cdecl L(void)'::`3'::L::M(void)'::`3'::L

?M@?2??0L@?2??1@YAHXZ@QEAAHXZ@4HA
; CHECK: int `public: int __cdecl `int __cdecl L(void)'::`3'::L::M(void)'::`3'::M

; Function local scopes of template functions
?M@?1???$L@H@@YAHXZ@4HA
; CHECK: int `int __cdecl L<int>(void)'::`2'::M

; And member functions of template classes
?SN@?$NS@H@NS@@QEAAHXZ
; CHECK: int __cdecl NS::NS<int>::SN(void)

?NS@?1??SN@?$NS@H@0@QEAAHXZ@4HA
; CHECK: int `public: int __cdecl NS::NS<int>::SN(void)'::`2'::NS

?SN@?1??0?$NS@H@NS@@QEAAHXZ@4HA
; CHECK: int `public: int __cdecl NS::NS<int>::SN(void)'::`2'::SN

?NS@?1??SN@?$NS@H@10@QEAAHXZ@4HA
; CHECK: int `public: int __cdecl NS::SN::NS<int>::SN(void)'::`2'::NS

?SN@?1??0?$NS@H@0NS@@QEAAHXZ@4HA
; CHECK: int `public: int __cdecl NS::SN::NS<int>::SN(void)'::`2'::SN

; Make sure instantiated templates participate in back-referencing.
; In the next 3 examples there should be 3 back-references:
; 0 = X (right most name)
; 1 = C<int> (second from right)
; 2 = C (third from right)
; Make sure all 3 work as expected by having the 4th component take each value
; from 0-2 and confirming it is the right component.
?X@?$C@H@C@0@2HB
; CHECK: static int const X::C::C<int>::X

?X@?$C@H@C@1@2HB
; CHECK: static int const C<int>::C::C<int>::X

?X@?$C@H@C@2@2HB
; CHECK: static int const C::C::C<int>::X

; Putting everything together.

; namespace A { namespace B { namespace C { namespace B { namespace C {
;   template<typename T>
;   struct C {
;     int B() {
;       static C<int> C;
;       static int B = 7;
;       static int A = 7;
;       return C.B() + B + A;
;     }
;   };
; } } } } }

?C@?1??B@?$C@H@0101A@@QEAAHXZ@4U201013@A
; CHECK: struct A::B::C::B::C::C<int> `public: int __cdecl A::B::C::B::C::C<int>::B(void)'::`2'::C

?B@?1??0?$C@H@C@020A@@QEAAHXZ@4HA
; CHECK: int `public: int __cdecl A::B::C::B::C::C<int>::B(void)'::`2'::B

?A@?1??B@?$C@H@C@1310@QEAAHXZ@4HA
; CHECK: int `public: int __cdecl A::B::C::B::C::C<int>::B(void)'::`2'::A