Trying to track down pkgsrc problem in upgraded system

[John Klos <john%ziaspace.com@localhost>]

I recently updated a netbsd-5 macppc system to netbsd-7. I rebuilt each 
package in turn until all had been recompiled to use the built-in OpenSSL. 
This included Apache 2.4.

However, this Apache serves files which do not report the current 
content-length. The files served appear to be padded with 0x0 bytes - a 7K 
file got padded to 8192 bytes, and a 3K file to 8150. I don't understand 
why.

What's strange, though, is when I deleted apache-2.4.17, then added 
apache-2.4.17 compiled with OpenSSL 1.0.2c with NetBSD 5, it worked 
perfectly.

I'm not serving these files via https, plus I tried both with and without 
compression, but both times the NetBSD 7 compiled Apache had issues.

Does anyone have a clue about why this might be and/or a good place to 
start trying to track down this issue?

Thanks,
John Klos