[cfe-users] 3.8 indentation with -fdiagnostics-show-template-tree doesn't show tree

[Larry Evans via cfe-users]

I've downloaded:

~/dwnlds/llvm/3.8/prebuilt $ wget 
http://www.llvm.org/releases/3.8.0/clang+llvm-3.8.0-x86_64-linux-gnu-ubuntu-14.04.tar.xz.sig

untarred it, and compiled a simple program:

#include <vector>

int main()
{
   std::vector<float > vecf(2);
   std::vector<double> vecd(2);
   vecf = vecd;
   return 0;
}

resulting in, as expected, an indented error message showing the tree:

       candidate function not viable: no known conversion from argument 
type to parameter type for 1st argument
   vector<
     [double != float],
     allocator<
       [double != float]>>
     vector& operator=(vector&& __x)
             ^

However, when compiling a much more complex template program, there's no 
tree evident by the indentation:

/home/evansl/dwnlds/llvm/3.8/prebuilt/clang+llvm-3.8.0-x86_64-linux-gnu-ubuntu-14.04/bin/clang++ 
-c -O0 -stdlib=libc++  -std=c++14 -ftemplate-backtrace-limit=0 
-fdiagnostics-show-template-tree -fno-elide-type 
-fmacro-backtrace-limit=0 
-I/home/evansl/prog_dev/boost/github/TBoost.Conversion 
-I/home/evansl/prog_dev/boost/sandbox/lje/non_variadic_templates 
-I/home/evansl/prog_dev/clang/libcxx/sandbox/libs/composite_storage/include 
-I../../../../../../boost/sandbox/lje/sandbox/lje 
-I/home/evansl/prog_dev/boost/releases/ro/boost_1_59_0  -DTYPE_AT_IMPL=0 
   -ftemplate-depth=100  texpressions.cpp -MMD -o 
/tmp/build/clangxx3_8_pkg/clang/libcxx/sandbox/libs/gram_stk/sandbox/texpressions.o 

In file included from texpressions.cpp:1:
./texpressions.hpp:1264:46: error: no member named 'size' in 
'texpressions<my_symbols>::gram_defs<my_attrs,
 
composite_storage::type_sequence<texpressions<my_symbols>::gram_def1<my_symbols<symb_kinds::varble_kind>::syms::varble0,
       def_ops::def_act, composite_storage::top (), 
var_ptr_bool::var_ptr_yes,
 
texpressions<my_symbols>::gram_expr<op_assoc<ops_non_nullary::op_bitor, 
associativity::assoc_left>,
 
texpressions<my_symbols>::gram_expr<texpressions<my_symbols>::op_symb<symb_kinds::literl_kind,
       my_symbols<symb_kinds::literl_kind>::syms::literl0>>,
 
texpressions<my_symbols>::gram_expr<op_assoc<ops_non_nullary::op_bitand, 
associativity::assoc_left>,
 
texpressions<my_symbols>::gram_expr<texpressions<my_symbols>::op_symb<symb_kinds::literl_kind,
       my_symbols<symb_kinds::literl_kind>::syms::literl1>>,
 
texpressions<my_symbols>::gram_expr<texpressions<my_symbols>::op_symb<symb_kinds::literl_kind,
       my_symbols<symb_kinds::literl_kind>::syms::literl0>> > > > > 
 >::attr_expr<op_assoc<ops_non_nullary::op_bitor,
       associativity::assoc_left>, 
texpressions<my_symbols>::gram_defs<my_attrs,
 
composite_storage::type_sequence<texpressions<my_symbols>::gram_def1<my_symbols<symb_kinds::varble_kind>::syms::varble0,
       def_ops::def_act, composite_storage::top (), 
var_ptr_bool::var_ptr_yes,
 
texpressions<my_symbols>::gram_expr<op_assoc<ops_non_nullary::op_bitor, 
associativity::assoc_left>,
 
texpressions<my_symbols>::gram_expr<texpressions<my_symbols>::op_symb<symb_kinds::literl_kind,
       my_symbols<symb_kinds::literl_kind>::syms::literl0>>,
 
texpressions<my_symbols>::gram_expr<op_assoc<ops_non_nullary::op_bitand, 
associativity::assoc_left>,
 
texpressions<my_symbols>::gram_expr<texpressions<my_symbols>::op_symb<symb_kinds::literl_kind,
       my_symbols<symb_kinds::literl_kind>::syms::literl1>>,
 
texpressions<my_symbols>::gram_expr<texpressions<my_symbols>::op_symb<symb_kinds::literl_kind,
       my_symbols<symb_kinds::literl_kind>::syms::literl0>> > > > >
 
 >::attr_expr<texpressions<my_symbols>::op_symb<symb_kinds::literl_kind,
       my_symbols<symb_kinds::literl_kind>::syms::literl0>>, 
texpressions<my_symbols>::gram_defs<my_attrs,
 
composite_storage::type_sequence<texpressions<my_symbols>::gram_def1<my_symbols<symb_kinds::varble_kind>::syms::varble0,
       def_ops::def_act, composite_storage::top (), 
var_ptr_bool::var_ptr_yes,
 
texpressions<my_symbols>::gram_expr<op_assoc<ops_non_nullary::op_bitor, 
associativity::assoc_left>,
 
texpressions<my_symbols>::gram_expr<texpressions<my_symbols>::op_symb<symb_kinds::literl_kind,
       my_symbols<symb_kinds::literl_kind>::syms::literl0>>,
 
texpressions<my_symbols>::gram_expr<op_assoc<ops_non_nullary::op_bitand, 
associativity::assoc_left>,
 
texpressions<my_symbols>::gram_expr<texpressions<my_symbols>::op_symb<symb_kinds::literl_kind,
       my_symbols<symb_kinds::literl_kind>::syms::literl1>>,
 
texpressions<my_symbols>::gram_expr<texpressions<my_symbols>::op_symb<symb_kinds::literl_kind,
       my_symbols<symb_kinds::literl_kind>::syms::literl0>> > > > > 
 >::attr_expr<op_assoc<ops_non_nullary::op_bitand,
       associativity::assoc_left>, 
texpressions<my_symbols>::gram_defs<my_attrs,
 
composite_storage::type_sequence<texpressions<my_symbols>::gram_def1<my_symbols<symb_kinds::varble_kind>::syms::varble0,
       def_ops::def_act, composite_storage::top (), 
var_ptr_bool::var_ptr_yes,
 
texpressions<my_symbols>::gram_expr<op_assoc<ops_non_nullary::op_bitor, 
associativity::assoc_left>,
 
texpressions<my_symbols>::gram_expr<texpressions<my_symbols>::op_symb<symb_kinds::literl_kind,
       my_symbols<symb_kinds::literl_kind>::syms::literl0>>,
 
texpressions<my_symbols>::gram_expr<op_assoc<ops_non_nullary::op_bitand, 
associativity::assoc_left>,
 
texpressions<my_symbols>::gram_expr<texpressions<my_symbols>::op_symb<symb_kinds::literl_kind,
       my_symbols<symb_kinds::literl_kind>::syms::literl1>>,
 
texpressions<my_symbols>::gram_expr<texpressions<my_symbols>::op_symb<symb_kinds::literl_kind,
       my_symbols<symb_kinds::literl_kind>::syms::literl0>> > > > >
 
 >::attr_expr<texpressions<my_symbols>::op_symb<symb_kinds::literl_kind,
       my_symbols<symb_kinds::literl_kind>::syms::literl1>>, 
texpressions<my_symbols>::gram_defs<my_attrs,
 
composite_storage::type_sequence<texpressions<my_symbols>::gram_def1<my_symbols<symb_kinds::varble_kind>::syms::varble0,
       def_ops::def_act, composite_storage::top (), 
var_ptr_bool::var_ptr_yes,
 
texpressions<my_symbols>::gram_expr<op_assoc<ops_non_nullary::op_bitor, 
associativity::assoc_left>,
 
texpressions<my_symbols>::gram_expr<texpressions<my_symbols>::op_symb<symb_kinds::literl_kind,
       my_symbols<symb_kinds::literl_kind>::syms::literl0>>,
 
texpressions<my_symbols>::gram_expr<op_assoc<ops_non_nullary::op_bitand, 
associativity::assoc_left>,
 
texpressions<my_symbols>::gram_expr<texpressions<my_symbols>::op_symb<symb_kinds::literl_kind,
       my_symbols<symb_kinds::literl_kind>::syms::literl1>>,
 
texpressions<my_symbols>::gram_expr<texpressions<my_symbols>::op_symb<symb_kinds::literl_kind,
       my_symbols<symb_kinds::literl_kind>::syms::literl0>> > > > >
 
 >::attr_expr<texpressions<my_symbols>::op_symb<symb_kinds::literl_kind,
       my_symbols<symb_kinds::literl_kind>::syms::literl0>> > >'
                     now_index=DefNow::now_t::size-num_rands;
                                              ^
./texpressions.hpp:1150:19: note: in instantiation of function template 
specialization
       'texpressions<my_symbols>::gram_defs<my_attrs,
 
composite_storage::type_sequence<texpressions<my_symbols>::gram_def1<my_symbols<symb_kinds::varble_kind>::syms::varble0,
       def_ops::def_act, composite_storage::top (), 
var_ptr_bool::var_ptr_yes,
 
texpressions<my_symbols>::gram_expr<op_assoc<ops_non_nullary::op_bitor, 
associativity::assoc_left>,
 
texpressions<my_symbols>::gram_expr<texpressions<my_symbols>::op_symb<symb_kinds::literl_kind,
       my_symbols<symb_kinds::literl_kind>::syms::literl0>>,
 
texpressions<my_symbols>::gram_expr<op_assoc<ops_non_nullary::op_bitand, 
associativity::assoc_left>,
 
texpressions<my_symbols>::gram_expr<texpressions<my_symbols>::op_symb<symb_kinds::literl_kind,
       my_symbols<symb_kinds::literl_kind>::syms::literl1>>,
 
texpressions<my_symbols>::gram_expr<texpressions<my_symbols>::op_symb<symb_kinds::literl_kind,
       my_symbols<symb_kinds::literl_kind>::syms::literl0>> > > > > 
 >::read_fold_from<ops_non_nullary::op_bitor,
       iter_range<my_symbols<symb_kinds::literl_kind>::syms,
 
inp_out_type<my_symbols<symb_kinds::literl_kind>::syms>::out_type>, 
def_now_t,
 
texpressions<my_symbols>::gram_expr<texpressions<my_symbols>::op_symb<symb_kinds::literl_kind,
       my_symbols<symb_kinds::literl_kind>::syms::literl0>>,
 
texpressions<my_symbols>::gram_expr<op_assoc<ops_non_nullary::op_bitand, 
associativity::assoc_left>,
 
texpressions<my_symbols>::gram_expr<texpressions<my_symbols>::op_symb<symb_kinds::literl_kind,
       my_symbols<symb_kinds::literl_kind>::syms::literl1>>,
 
texpressions<my_symbols>::gram_expr<texpressions<my_symbols>::op_symb<symb_kinds::literl_kind,
       my_symbols<symb_kinds::literl_kind>::syms::literl0>> > >' 
requested here
                   read_fold_from
                   ^

As you can see from the output, there's only *one* level of indentation 
when several levels, reflecting the tree structure, are what I expected.

How do I get the expected indentation?

TIA.

-regards,
Larry