Description of problem:
When processing %files, get: "getOutputFrom(): Broken pipe"

Version-Release number of selected component (if applicable):
rpm version 4.1

How reproducible:
Very

Steps to Reproduce:
1. %files list w more than 46 file names; size of files irrelevant
2. rpmbuild -bb -vv arpa-3.1-4.spec

    
Actual results:
   .
   .
Checking for unpackaged files(): /usr/lib/rpm/check_files %{buildroot}
getOutputFrom(): Broken pipe
#

Expected results:
   .
   .
Checking for unpackaged files(): /usr/lib/rpm/check_files %{buildroot}
D: fini   100644     1 (    0,   0)  234  asdlkfh  etc
   .
   .
GZDIO: 34 writes,    4615548 total bytes in 0.088 secs
D: Signature: size(180)+pad(4)
Wrote:  /usr/src/redhat/RPMS/i386/arpa-3.1-4.i386.rpm
#


Additional info:
two *.spec files work fine w. rpm 4.0.4; same problem w. both
BuildRoot undefined (check-files doesn't do anything)
no %prep, %build, %install, or %clean
no files in %files have any file-related directives
file list works fine as input to cpio
seems to be related to number of files, not any particular file, contents or size
"default" RedHat 8.0 install