[Bug c++/58591] GCC emits bad mangling for template function with a parameter pack

[ccoutant at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58591

--- Comment #3 from Cary Coutant <ccoutant at gcc dot gnu.org> ---
I think the template argument descriptors should be "I1AJiiEE". This produces a
demangling that looks right:

$ c++filt _Z9ConstructI1AJiiEEvPT_DpOT0_
void Construct<A, int, int>(A*, int&&, int&&)

And running this test case through LLVM, that's the mangled name it produces.