http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46097
--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> 2010-10-20 22:46:45 UTC --- I had a look at Cryptopp-SO-Test-1.zip building on 32-bit I can reproduce a segfault it doesn't build on 64-bit at all: 1) you can insert a pointer into an ostream without casting to int (and if you insist on casting, do it to a type that has the same size as a pointer!) 2) that makefile doesn't compile dsotest-1.o and dsotest-2.o with -fPIC To get it build I had to edit the code and the makefile, and after doing so it doesn't crash. And with the same changes, it doesn't crash on 32-bit either. So are you sure this isn't just user error? I can see some value in the warning you want, but it's not going to help if you don't use the compiler correctly (maybe I'm being unfair and you're using it correctly for 32-bit, but my first instinct is that if it fails to build for a different target then *something* is wrong!)
