Annex C (informative) Compatibility [diff]

C.5 C standard library [diff.library]

C.5.2 Modifications to definitions [diff.mods.to.definitions]

C.5.2.3 Header <assert.h> [diff.header.assert.h]

The token static_­assert is a keyword in this International Standard.
It does not appear as a macro name defined in <cassert>.