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cppdraft_translate/cppdraft/diff/cpp03/diagnostics.md
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[diff.cpp03.diagnostics]

Annex C (informative) Compatibility [diff]

C.6 C++ and ISO C++ 2003 [diff.cpp03]

C.6.9 [diagnostics]: diagnostics library [diff.cpp03.diagnostics]

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Affected subclause: [errno]

Change: Thread-local error numbers.

Rationale: Support for new thread facilities.

Effect on original feature: Valid but implementation-specific C++ 2003 code that relies onerrno being the same across threads may change behavior in this revision of C++.