1; RUN: llvm-undname < %s | FileCheck %s
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3; CHECK-NOT: Invalid mangled name
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5??__LA@@QEAA?AUno_suspend@@XZ
6; CHECK: struct no_suspend __cdecl A::operator co_await(void)
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8??__MS@@QEAA?AVstrong_ordering@std@@AEBU0@@Z'
9; CHECK: class std::strong_ordering __cdecl S::operator<=>(struct S const &)
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11?f@@YAX_Q@Z
12; CHECK: void __cdecl f(char8_t)
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