"Empty character constant " build failure(s) — clang 3.0

PackageVersionSupposed error messageFull log Bug report
gmerlin-avdecoder 1.1.0~dfsg-3demux_wve.c:30:33: error: empty character constant Log
vnc4 4.1.1+X4.3.0-37./config/cf/Imake.rules:1627:27: error: empty character constant Log
xcftools 1.0.7-3./options.i:201:63: error: empty character constant Log

3 errors