development tool to identify missed opportunity for "const" [closed]

Question

Since C++ compilers can (usually) detect violations of constness, are there any tools that will identify missed opportunities for declaring something as const?

Answer 1

gcc has -Wsuggest-attribute=[pure|const|noreturn|format], but I believe these are limited to functions and function pointers.

http://gcc.gnu.org/onlinedocs/gcc/Warning-Options.html