No diagnostic for redefinition of symbols

[Eisenwave]

cdecl+ Input

size_t size_t

Expected Prose

Error: redefinition of size_t as different kind of symbol

Actual Prose or Error

Declare size_t as size_t

Additional Context

Any use of a _t type as a typedef-name should register that symbol as a known type, and using the same symbol as an identifier in any context should then be illegal.