According to Nick Cremelie:
[...] output_epilog(??, ??), line 4027 in "rs6000.c" final_end_function(??, ??, ??), line 1151 in "final.c" rest_of_compilation(decl = internal error: assertion failed at line 947 in file frame.c [...]
If you could call the function `debug_tree()' on the parameter `decl' of `rest_of_compilation()', it would be helpful if you posted the result here.
Peter