../../gcc/tree-cfg.c: In function `remove_bb': ../../gcc/tree-cfg.c:2062: error: invalid type argument of `unary *'
This was fixed on mainline on March 7.
Is --enable-mapped-location considered to be a functional in 4.0 ?
Apparently no. The fixes have not been backported to the gcc-4.0 branch. Since enable-mapped-location is a new feature, breakage probably won't be considered a regression that needs to be fixed.
It should be functional on mainline, but may not be checked very often. -- Jim Wilson, GNU Tools Support, http://www.SpecifixInc.com