------- Comment #5 from jason at redhat dot com 2008-11-11 17:45 -------
Subject: Re: [4.2/4.3/4.4 regression] Incomplete __decltype/__typeof
expressions accepted
jakub at gcc dot gnu dot org wrote:
> Another possibility would be add support for queing error messages during
> tentative parsing and at cp_parser_commit_to_tentative_parse emit them.
This seems right to me. It's even what the comment at the top of the
file says we do:
Then, while we attempt to parse the construct, the parser queues
up
error messages, rather than issuing them immediately, and saves
the
tokens it consumes. If the construct is parsed successfully, the
parser "commits", i.e., it issues any queued error messages and
the tokens that were being preserved are permanently discarded.
The simulate_error business only works for parse errors that indicate
that this line of parsing won't work; it doesn't work for code that
parses fine, but violates semantic rules and therefore needs an error.
Jason
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34269
