On 04/05/15 22:31 +0200, François Dumont wrote:
Hi
Here is the patch to demangle symbols in debug messages. I have
also simplify code in formatter.h.
Here is an example of assertion message:
/home/fdt/dev/gcc/build/x86_64-unknown-linux-gnu/libstdc++-v3/include/debug/functions.h:213:
error: function requires a valid iterator range [__first, __last).
Objects involved in the operation:
iterator "__first" @ 0x0x7fff165d68b0 {
type =
__gnu_debug::_Safe_iterator<__gnu_cxx::__normal_iterator<int*,
std::__cxx1998::vector<int, std::allocator<int> > >,
std::__debug::vector<int, std::allocator<int> > > (mutable
iterator);
state = dereferenceable;
references sequence with type `std::__debug::vector<int,
std::allocator<int> >' @ 0x0x7fff165d69d0
}
iterator "__last" @ 0x0x7fff165d68e0 {
type =
__gnu_debug::_Safe_iterator<__gnu_cxx::__normal_iterator<int*,
std::__cxx1998::vector<int, std::allocator<int> > >,
std::__debug::vector<int, std::allocator<int> > > (mutable
iterator);
state = dereferenceable;
references sequence with type `std::__debug::vector<int,
std::allocator<int> >' @ 0x0x7fff165d69d0
}
* include/debug/formatter.h (_GLIBCXX_TYPEID): New macro to simplify
usage of typeid.
(_Error_formatter::_M_print_type): New.
* src/c++11/debug.cc
(_Error_formatter::_Parameter::_M_print_field): Use latter.
(_Error_formatter::_M_print_type): Implement latter using
__cxaabiv1::__cxa_demangle to print demangled type name.
I just hope that __cxa_demangle is portable.
It's provided by GCC itself so is always available in the runtime.
(It is also portable, because it's defined by the Itanium C++ ABI).
Ok to commit ?
Yes, this is great, thanks!