Peter Geoghegan <pg(at)heroku(dot)com> writes:
> The problem was that one particular call to the macro
> RELEASE_SLAB_SLOT() happened to lack a test-for-NULL-argument needed
> by pass-by-value datum cases. The other two RELEASE_SLAB_SLOT() calls
> already have such a check.
> Attached patch fixes the bug.
Pushed, thanks.
regards, tom lane