pete@petelancashire.com writes:
> make check
> -O2 passes w/o errors
> -O3 with or without -strict fails
Presumably what is happening here (and also in your followon #13499)
is that xlc with higher optimization levels generates bad code. Whether
this is a compiler bug, or is traceable to a valid deficiency in our code,
is really impossible to tell for anyone without access to that compiler
(and even with access, it might be a lot of work). If you want to trace
it down I'm afraid it's going to be pretty much your responsibility to do
it.
regards, tom lane