efriedma added a comment.
The numbers are backreferences of the sort generated by mangleSourceName(), I
think. If you nest deeply enough, MSVC stops using them; for example:
struct A {
union {union { union {union {
struct B {struct C {struct D {struct E {struct F {struct G {
struct H {struct I {struct J {struct K {
};};};};};};};};};};
using T = B::C::D::E::F::G::H::I::J::K;
T x;
using T2 = B::C::D::E::F::G::H::I::J;
T2 y;
};};};};
};
void f(decltype(A::x)) {}
void f2(decltype(A::y)) {}
void *g = (void*)&f;
void *g2 = (void*)&f2;
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D146386/new/
https://reviews.llvm.org/D146386
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