Function Perl_sv_vcatpvfn

pub unsafe extern "C" fn Perl_sv_vcatpvfn(
    my_perl: *mut PerlInterpreter,
    sv: *mut SV,
    pat: *const c_char,
    patlen: STRLEN,
    args: *mut va_list,
    svargs: *mut *mut SV,
    sv_count: usize,
    maybe_tainted: *mut bool,
)