http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59603
Bug ID: 59603
Summary: std::random_shuffle tries to swap element with itself
Product: gcc
Version: 4.8.2
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libstdc++
Assignee: unassigned at gcc dot gnu.org
Reporter: fab at orlen dot de
When using the debugging macro _GLIBCXX_DEBUG, calling random_shuffle fails on
some types, because it might try to swap an element with itself.
Output of attached program:
/tmp$ g++ -o random_shuffle_bug -std=c++11 random_shuffle_bug.cc
/tmp$ ./random_shuffle_bug
/usr/include/c++/4.8.2/debug/vector:159:error: attempt to self move assign.
Objects involved in the operation:
sequence "this" @ 0x0xa600c8 {
type = NSt7__debug6vectorIiSaIiEEE;
}
Aborted (core dumped)
return code: 134
I could not find any information about whether swapping an element with itself
is allowed.
