Thread

Re: Make copyObject work in C++

Jelte Fennema-Nio <postgres@jeltef.nl> — 2025-12-08T08:11:59Z

On Sun Dec 7, 2025 at 8:45 PM CET, Tom Lane wrote:
> #ifdef __cplusplus
> #undef typeof
> #define typeof decltype
> #define HAVE_TYPEOF 1
> #endif

Went with defining pg_exprtype (pg_typeof already exists). Undefining
typeof seemed a bit heavy-handed. Especially since I think it would be
nice to backport this so C++ extensions can use copyObject directly.

> BTW, grepping finds a number of random references to __typeof__ and
> __typeof, which probably ought to be updated to be just typeof.

Added a follow on patch that starts using pg_exrtype in all those
places.