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Re: [v3] revamp header pedantic testing
- From: Steve Ellcey <sje at cup dot hp dot com>
- To: Benjamin Kosnik <bkoz at redhat dot com>
- Cc: libstdc++ at gcc dot gnu dot org, gcc-patches at gcc dot gnu dot org
- Date: Thu, 13 Aug 2009 11:09:19 -0700 (PDT)
- Subject: Re: [v3] revamp header pedantic testing
> What is wierd is that if I compile
> all_pedantic_errors.cc (which has nothing but '#include <bits/extc++.h>'
> in it) using the just built compiler from its installed location, it
> works fine. But it I compile it the way the test run does (with the -B's
> and -I's, out of the build directory), then it fails. I am trying to
> figure out where the two compilations diverge but I was wondering if you
> had any thoughts on this problem.
> Steve Ellcey
Following up on my own email, it looks like the reason I get this error
when running the testsuite from the build location and not from the
installed location is that we use -I to include the new C++ header files
from the building locaion intead of -isystem. -isystem would suppress
these messages (even if -pedantic-errors is used) and allow the tests to
pass. I am going to test a change to libstdc++-v3/acinclude.m4 to use
-isystem instead of -I.