[Bug pch/14400] Cannot compile qt-x11-free-3.3.0

[Ian Lance Taylor]

Geoffrey Keating <geoffk@apple.com> writes:

> I think that PCH that fails on one case out of a thousand is better
> than PCH that fails in one thousand cases out of one thousand.

Any thoughts on how difficult it would be to, when a PCH can not be
loaded at the correct address, skip the PCH and try for the original
header files?  We'd want to issue a warning, but the result will still
be better then a compiler crash, particularly since the crash will be
awkward to work around without manually removing the PCH.  Of course,
the result will not necessarily be equivalent--the original headers
might not be present, or might have been modified since the PCH was
created.

Ian