https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65392
Bug ID: 65392
Summary: Bad mangled names in Debug Mode assertions
Product: gcc
Version: 5.0
Status: UNCONFIRMED
Keywords: diagnostic
Severity: normal
Priority: P3
Component: libstdc++
Assignee: unassigned at gcc dot gnu.org
Reporter: redi at gcc dot gnu.org
#include <deque>
int main()
{
std::deque<int> d;
auto it = d.begin();
it - 2;
}
/usr/include/c++/4.8.3/debug/safe_iterator.h:378:error: attempt to retreat
a past-the-end iterator 2 steps, which falls outside its valid range.
Objects involved in the operation:
iterator @ 0x0x7fff3e6b1930 {
type =
N11__gnu_debug14_Safe_iteratorINSt9__cxx199815_Deque_iteratorIiRiPiEENSt7__debug5dequeIiSaIiEEEEE
(mutable iterator);
state = past-the-end;
references sequence with type `NSt7__debug5dequeIiSaIiEEE' @ 0x0x7fff3e6b1930
}
Aborted (core dumped)
The types shown are not valid symbol names and cannot be demangled. They are
missing the _Z prefix.
We should not bother printing out mangled names if users can't demangle them to
get something meaningful. Ideally we should be demangling them automatically.
