Re: CVS MinGW (Crossed-)Native Compiler is Toast

[Mohan Embar <gnustuff at thisiscool dot com>]

Hi Andrew,

> > >---------------------------------8<---------------------------------------------
> > >D:\Program Files\thisiscool-gcc\examples\HelloWorld>gcj --main=HelloWorld -o HelloWorld.exe HelloWorld.java
> > >HelloWorld.java: In class `HelloWorld':
> > >HelloWorld.java: In method `HelloWorld.main(java.lang.String[])':
> > >HelloWorld.java:5: internal compiler error: tree check: expected class 'e', have 't' (complex_type) in issue_warning_error_from_context, at java/parse.y:3051
> > >Please submit a full bug report,
> > >with preprocessed source if appropriate.
> > >See <URL:http://gcc.gnu.org/bugs.html> for instructions.
> > >---------------------------------8<---------------------------------------------
> > >
> > >This doesn't happen with the cross compiler
> > >((i686-pc-linux-gnu,i686-pc-linux-gnu,i686-pc-mingw32)).
> > 
> > Does anyone have any suggestions as to how I should investigate this?
>
>Open it in gdb and use debug_tree() on the expr that causes the error.

I usually have terrible luck with gdb on Windows.

I modified tree_class_check_failed in gcc/tree.c and added the
line debug_tree(node); before the call to internal_error.

I get this:

 <complex_type 41f180

...and then a segfault.

Something seems horribly wrong. I'm not sure whether a complex_type node
is really being built or whether something is just plain hosed. I'll keep digging
but would appreciate any tips or insight. I can't understand why the cross compiler
doesn't behave this way.

-- Mohan
http://www.thisiscool.com/
http://www.animalsong.org/