i installed what version of sunstudio?

yes you did.

# pkginfo | grep SPRO
application SPROatd    Sun Studio 12 update 1 Advanced Tools Development Module
application SPROcc     Sun Studio 12 update 1 C Compiler
application SPROcmpl   Sun Studio 12 update 1 C++ Complex Library
application SPROcpl    Sun Studio 12 update 1 C++ Compiler
application SPROcplx   Sun Studio 12 update 1 C++ 64-bit Libraries

but what about CC?

/opt/SUNWspro/bin/CC -V

that'll tell you the patch level.