Warning on useless 'const' in a function declaration

["R. Diez via Gcc-help" <gcc-help@xxxxxxxxxxx>]

Hi all:

Sometimes, I forget to remove useless 'const' modifiers in function declarations. A simplified example is:

file.h:

int f ( const int a );  // 'const' is useless here.


file.cpp:

int f ( const int a )
{
  return a;
}


Is there a way to make GCC issue warnings about those useless 'const' modifiers? At the very least, it would save some head scratching during code reviews.

Apparently, clang-tidy has option 'readability-avoid-const-params-in-decls' for such a warning:

https://clang.llvm.org/extra/clang-tidy/checks/readability/avoid-const-params-in-decls.html

Thanks in advance,
  rdiez