# <builtin-type> ::= v  # void
#                ::= w  # wchar_t
#                ::= b  # bool
#                ::= c  # char
#                ::= a  # signed char
#                ::= h  # unsigned char
#                ::= s  # short
#                ::= t  # unsigned short
#                ::= i  # int
#                ::= j  # unsigned int
#                ::= l  # long
#                ::= m  # unsigned long
#                ::= x  # long long, __int64
#                ::= y  # unsigned long long, __int64
#                ::= n  # __int128
#                ::= o  # unsigned __int128
#                ::= f  # float
#                ::= d  # double
#                ::= e  # long double, __float80
#                ::= g  # __float128
#                ::= z  # ellipsis
#                ::= Dd # IEEE 754r decimal floating point (64 bits)
#                ::= De # IEEE 754r decimal floating point (128 bits)
#                ::= Df # IEEE 754r decimal floating point (32 bits)
#                ::= Dh # IEEE 754r half-precision floating point (16 bits)
#                ::= Di # char32_t
#                ::= Ds # char16_t
#                ::= Da # auto
#                ::= Dc # decltype(auto)
#                ::= Dn # std::nullptr_t (i.e., decltype(nullptr))
#                ::= u <source-name>    # vendor extended type

"_Z3barv", "bar()"
"_Z3barPv", "bar(void*)"
"_Z3bariPv", "bar(int, void*)"
"_Z3fooww", "foo(wchar_t, wchar_t)"
"_Z3foob", "foo(bool)"
"_Z3foocah", "foo(char, signed char, unsigned char)"
"_Z3barstij", "bar(short, unsigned short, int, unsigned int)"
"_Z3barlmxy", "bar(long, unsigned long, long long, unsigned long long)"
"_Z3barno", "bar(__int128, unsigned __int128)"
"_Z3foofdeg", "foo(float, double, long double, __float128)"
"_Z3fooiPcz", "foo(int, char*, ...)"
"_Z3fooDdDeDfDh", "foo(decimal64, decimal128, decimal32, half)"
"_Z3barDiDs", "bar(char32_t, char16_t)"
"_Z3barIiEDai", "auto bar<int>(int)"
"_Z3barIiEDci", "decltype(auto) bar<int>(int)"
"_Z3barIiEDni", "decltype(nullptr) bar<int>(int)"