18 Diagnostics library [diagnostics]

18.1 General [diagnostics.general]

This Clause describes components that C++ programs may use to detect and report error conditions.
The following subclauses describe components for reporting several kinds of exceptional conditions, documenting program assertions, and a global variable for error number codes, as summarized in Table 38.
Table 38 — Diagnostics library summary
Subclause
Header(s)
Exception classes
<stdexcept>
Assertions
<cassert>
Error numbers
<cerrno>
System error support
<system_­error>