Annex C (informative) Compatibility [diff]

C.2 C++ and ISO C++ 2003 [diff.cpp03]

C.2.11 Clause [utilities]: general utilities library [diff.cpp03.utilities]

Change: Minimal support for garbage-collected regions.
Rationale: Required by new feature.
Effect on original feature: Valid C++ 2003 code, compiled without traceable pointer support, that interacts with newer C++ code using regions declared reachable may have different runtime behavior.

[refwrap], [arithmetic.operations], [comparisons], [logical.operations], [bitwise.operations], [depr.negators]
Change: Standard function object types no longer derived from std​::​unary_­function or std​::​binary_­function.
Rationale: Superseded by new feature; unary_­function and binary_­function are no longer defined.
Effect on original feature: Valid C++ 2003 code that depends on function object types being derived from unary_­function or binary_­function may fail to compile in this International Standard.