This Bugzilla instance is a read-only archive of historic NetBeans bug reports. To report a bug in NetBeans please follow the project's instructions for reporting issues.
The problem is that user can set different architecture settings for C, C++ and Fortran compilers. And any usecase doesn't come into mind why somebody would need to make C compiler generate 32- and C++ compiler 64-bit code, but now it is possible to do. So it looks like we should have architecture on project level, but not on compiler level.