https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61718
Bug ID: 61718
Summary: Visibility issue with template class
Product: gcc
Version: 4.8.3
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: goughost at yahoo dot com.cn
With this code snippet::
#pragma GCC visibility push(hidden)
#define YYY_VIS ???
#define XXX_VIS ???
class YYY_VIS YYY;
template <typename T>
class XXX_VIS XXX {
void func() {
return;
}
};
template class XXX<YYY *>;
Compiling with different definitions of XXX_VIS and YYY_VIS, results in the
following table::
XXX_VIS YYY_VIS func visibility when compiled
default default visible
default <nothing> hidden
<nothing> default hidden
<nothing> <nothing> hidden
Here, ``default`` is short for ``__attribute__((visibility("default")))``, and
``<nothing>`` means empty macro.
What is the rational behind the 2nd row in the table? My expection is that
``func`` is visible when ``XXX`` is declared visible, no matter what YYY is.
