visibility
The visibility function attributes describe whether and how a function defined in one module can be referenced or used in other modules. By using this feature, you can make a shared library smaller and decrease the possibility of symbol collision. For details, see Using visibility attributes.
Example
In the following example, the visibility
attribute of function void f(int i, int j) is hidden:
void __attribute__((visibility("hidden"))) f(int i, int j);
