https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113958
Bug ID: 113958
Summary: support visibility attribute for typeinfo symbol
Product: gcc
Version: 13.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: noelgrandin at gmail dot com
Target Milestone: ---
Currently, if I want to compile with visibility=hidden, and only expose some
parts of a class definition to the linker, I can use
class Foo {
__attribute__ ((visibility("default"))) some_member() {}
};
on the individual class members. Unfortunately, if external code wants to
dynamic_cast that class, then I end up with
/usr/bin/ld: libsvxlo.so: undefined reference to `typeinfo for SvxCharView'
When compiling with clang, I can specify
__attribute__ ((type_visibility("default"))) class Foo {}
to solve the typeinfo linkage problem.
It would be wonderful if GCC could support something similar.
