/usr/share/info/gcc.info.gz points to gcc-4.6.info.gz (don't know whether that was the case before), but that is of no use for providing correct `info gcc', because:
(1) update-info-dir does not look at symlinks.
(2) the info-dir section in gcc-4.6.info.gz is not meant to provide a match for (gcc) anyway.
Just re-tested this one. It's still broken.
/usr/share/ info/gcc. info.gz points to gcc-4.6.info.gz (don't know whether that was the case before), but that is of no use for providing correct `info gcc', because:
(1) update-info-dir does not look at symlinks.
(2) the info-dir section in gcc-4.6.info.gz is not meant to provide a match for (gcc) anyway.
Best,
E.