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Comment by pritambaral | Hacker News Reader

> But seriously, the thing that hurts more is that we only require a C89 compiler :/

Indeed. For a glimpse for the non-PG-hackers (like me), there's an ongoing attempt discussed in the PG-hackers mailing list to use stdbool.h.

That can be tricky because you can't emulate the semantics of the C99 bool type.

In C99

  (bool)256 == 1

but on systems which emulate bool with, e.g., an 8-bit unsigned char then

  (bool)256 == 0

Another problem is that the bool provided by stdbool.h is 4 bytes on some platforms, which breaks PostgreSQL all over the place.