On 20/05/15 21:45 +0200, François Dumont wrote:
On 20/05/2015 12:19, Jonathan Wakely wrote:
Does this fix https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65392 ?

With the patch this code of the bug report generates the following debug message:

/home/fdt/dev/gcc/build/x86_64-unknown-linux-gnu/libstdc++-v3/include/debug/safe_iterator.h:395:
   error: attempt to retreat a past-the-end iterator 2 steps, which falls
   outside its valid range.

Objects involved in the operation:
iterator @ 0x0x7fff32365c50 {
type = __gnu_debug::_Safe_iterator<std::__cxx1998::_Deque_iterator<int, int&, int*>, std::__debug::deque<int, std::allocator<int> > > (mutable iterator);
 state = past-the-end;
references sequence with type `std::__debug::deque<int, std::allocator<int> >' @ 0x0x7fff32365cd0
}

which looks nice.

However I wouldn't say that bug is fixed because debug mode do not generate mangle name, it simply rely on typeid to get it. Shouldn't bug report be saying so ? Whatever, symbol generated by typeid can be demangle by __cxa_demangle so it mustn't be that bad.

I was trying to demangle the names with c++filt, which failed. Users
should not have to write a C++ program using __cxa_demangle to read
the output.

If they are automatically demangled now then the bug is fixed.

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