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5.52.10 Visibility Pragmas

#pragma GCC visibility push(visibility)
#pragma GCC visibility pop
This pragma allows the user to set the visibility for multiple declarations without having to give each a visibility attribute See Function Attributes, for more information about visibility and the attribute syntax.

In C++, `#pragma GCC visibility' affects only namespace-scope declarations. Class members and template specializations are not affected; if you want to override the visibility for a particular member or instantiation, you must use an attribute.