[diff.cpp14.containers]

# Annex C (informative) Compatibility [[diff]](./#diff)

## C.4 C++ and ISO C++ 2014 [[diff.cpp14]](diff.cpp14#containers)

### C.4.11 [[containers]](containers "23 Containers library"): containers library [diff.cpp14.containers]

[1](#1)

[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/compatibility.tex#L1899)

**Affected subclause:** [[associative.reqmts]](associative.reqmts)  


**Change:** Requirements change:  

**Rationale:** Increase portability, clarification of associative container requirements[.](#1.sentence-2)

  


**Effect on original feature:** Valid C++ 2014 code that attempts to use associative containers
having a comparison object with non-const function call operator
may fail to compile in this revision of C++[.](#1.sentence-3)

[*Example [1](#example-1)*: #include <set>struct compare{bool operator()(int a, int b){return a < b; }};

int main() {const std::set<int, compare> s;
 s.find(0);} — *end example*]