Created attachment 348032 [details]
Example .spec file to generate described error condition

Description of problem:
A new size check was recently added to rpmbuild (in Bug 433795), which causes rpmbuild to gracefully error and exit if the contents of the .rpm will exceed 2GB in size.

This size check is performed prior to the elimination of duplicate files, however, so in odd fringe cases it is possible for rpmbuild to exit with the >2GB warning even if the contents of the .rpm are actually smaller than 2GB.


Version-Release number of selected component (if applicable):
rpm-build-4.3.3-32_nonptl


How reproducible:
Easily.


Steps to Reproduce:
1. Create an rpm .spec file containing duplicate files in the %files section such that the total size of all the duplicate files exceeds 2GB but the total size of the files when duplicates are eliminated is less than 2GB.

I've attached an extremely simple example .spec file that lists a directory in the %files section (thus including the contents of that directory) but then also includes the individual files in that directory.

2. Attempt to rpmbuild that spec file.
  

Actual results:

The rpmbuild will fail with the following error message:

RPM build errors:
    Package too large (> 2147483647 bytes)


Expected results:

The rpmbuild should succeed.


Additional info:

This is admittedly an exception case that only occurs when the .spec file is arguably wrong (or at least lazy). However, since rpmbuild does gracefully handle duplicate files, this should be taken into account in the package size check.