std::string::assign (reverse_iterator, reverse_iterator) assigning self incorrect

• Key: STDCXX-629
• Type: Bug
• Status: Reopened
• Priority: Minor
• Assignee: Unassigned
• Reporter: Farid Zaripov
• Component/s: 21. Strings
• Affects Version/s: 4.1.2, 4.1.3, 4.1.4, 4.2.0
• Fix Version/s: 4.3.0

Description

The 21.string.assign.cpp test has been failing a number of assertions for self-referential test cases that exercise the ability to assign a substring of a string into itself using the assign(InputIterator, InputIterator) member template specialization for InputIterator being an actual reverse_iterator. The program below reproduces the problem in a small isolated test case.

#include <cassert>
#include <string>

int main ()
{
std::string s ("abc");
s.assign (s.rbegin () + 1, s.rend ());
assert ("ba" == s);
}