with version 1.25.
Bison 1.28 fixed a bug in the initialization of the `undefined' symbol
table entry. Unfortunately something about the way we are compiling
egcs-1.1.2's cc1plus breaks with this bugfix.
"--broken-undeftoken-init" is needed when compiling cc1plus. Otherwise
/usr/libexec/cc1plus cannot compile libgcc.
In case you're wondering, the gcc-2.7.2.1 import uses this to generate
code. The size of the generated code is bigger than the entire bison
release, making this a saving. The bison doc is pretty good apparently.