Mario Emmenlauer <ma...@emmenlauer.de> writes: > The idea to switch to dup(2) sounds very good to me.
I poked at this some more, and verified that adding "fclose(stdin);" at the head of PostmasterMain is enough to trigger the reported failure. However, after changing fd.c to dup stderr not stdin, we can pass check-world even with that in place. So that confirms that there is no very good reason for the postmaster to require stdin to be available. Hence, I pushed the fix to make fd.c use stderr here. I only back-patched to v14, because given the lack of other complaints, I couldn't quite justify touching stable branches for this. regards, tom lane