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Enhance print type in debug mode
- From: FranÃois Dumont <frs dot dumont at gmail dot com>
- To: "libstdc++ at gcc dot gnu dot org" <libstdc++ at gcc dot gnu dot org>, gcc-patches <gcc-patches at gcc dot gnu dot org>
- Date: Sat, 20 Dec 2014 20:27:34 +0100
- Subject: Enhance print type in debug mode
- Authentication-results: sourceware.org; auth=none
Hi
I plan to work on new debug diagnostics for which I would like to
display the type having a problem so this is a patch to add this kind of
parameter.
Moreover I dealt with demangling to move from this kind of diagnostic:
/home/fdt/dev/gcc/build/x86_64-unknown-linux-gnu/libstdc++-v3/include/debug/unordered_map:191:
error: attempt to access container with out-of-bounds bucket index 1,
container only holds 1 buckets.
Objects involved in the operation:
sequence "this" @ 0x0x7fff24fe33c0 {
type =
NSt7__debug13unordered_mapIiiSt4hashIiESt8equal_toIiESaISt4pairIKiiEEEE;
}
to:
/home/fdt/dev/gcc/build/x86_64-unknown-linux-gnu/libstdc++-v3/include/debug/unordered_map:191:
error: attempt to access container with out-of-bounds bucket index 1,
container only holds 1 buckets.
Objects involved in the operation:
sequence "this" @ 0x0x7fff1ee0ef00 {
type = std::__debug::unordered_map<int, int, std::hash<int>,
std::equal_to<int>, std::allocator<std::pair<int const, int> > >;
}
I just want to make sure it is safe and especially portable to use
__cxa_demangle and that it is ok to do this now.
2014-12-20 FranÃois Dumont <fdumont@gcc.gnu.org>
* include/debug/formatter.h
(_Error_formatter::_Parameter::_M_kind): Add __type enum entry.
(_Error_formatter::_Parameter::_M_variant._M_type): New.
(_Error_formatter::_Parameter::_M_type<>()): New.
(_Error_formatter::_Parameter::_M_print_type): New.
* src/c++11/debug.cc
(_Error_formatter::_Parameter::_M_print_field): Use latter.
Use __cxaabiv1::__cxa_demangle to print demangled type name.
FranÃois