RFC: Non-indirect-dispatch and failed loading of classes

[Andrew Haley]

Ranjit Mathew writes:
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 > Andrew Haley wrote:
 > > Ranjit Mathew writes:
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 > >  > Hi,
 > >  > 
 > >  >   Consider the following:
 > >  > 
 > >  > Foo.java:
 > >  >   class Foo { }
 > >  > 
 > >  > Bar.java:
 > >  >   class Bar extends Foo { }
 > >  > 
 > >  > Compile both to bytecode and then remove Foo.*. Now try to
 > >  > compile Bar.class to object code (non-indirect-dispatch).
 > >  > We get an internal error with current mainline.
 > > 
 > > We should get a class not found error.
 > 
 > We do get an error, but it's not a fatal error and we die
 > later trying to lay out this class:

OK, I see.  The traditional way to fix things is to use
error_mark_node, but it leads to uglified code with checks everywhere.

I'm not sure how best to fix this one, but I'd try leaving
layout_class_methods early, and if that doesn't work terminating the
compilation.

Andrew.