The following code compiled with -fvisibility=hidden produces only typeinfo
symbols with hidden visibility:
#define GOTT_EXPORT __attribute__ ((visibility("default")))
template<class T> struct GOTT_EXPORT spelled_t {};
template<class T>
inline std::type_info const &spell() {
return typeid(spelled_t<T>);
}
... spell<long>()
readelf -sW says:
1441: 0000000000180800 16 OBJECT LOCAL HIDDEN 22
_ZTIN4gott4xany9spelled_tIlEE
2536: 0000000000058cb0 26 OBJECT LOCAL HIDDEN 12
_ZTSN4gott4xany9spelled_tIlEE
gcc -v says:
Reading specs from /usr/lib/gcc/x86_64-pc-linux-gnu/3.4.4/specs
Configured with: /var/tmp/portage/gcc-3.4.4-r1/work/gcc-3.4.4/configure
--prefix=/usr --bindir=/usr/x86_64-pc-linux-gnu/gcc-bin/3.4.4
--includedir=/usr/lib/gcc/x86_64-pc-linux-gnu/3.4.4/include
--datadir=/usr/share/gcc-data/x86_64-pc-linux-gnu/3.4.4
--mandir=/usr/share/gcc-data/x86_64-pc-linux-gnu/3.4.4/man
--infodir=/usr/share/gcc-data/x86_64-pc-linux-gnu/3.4.4/info
--with-gxx-include-dir=/usr/lib/gcc/x86_64-pc-linux-gnu/3.4.4/include/g++-v3
--host=x86_64-pc-linux-gnu --build=x86_64-pc-linux-gnu --disable-altivec
--enable-nls --without-included-gettext --with-system-zlib --disable-checking
--disable-werror --disable-libunwind-exceptions --enable-multilib
--disable-libmudflap --disable-libgcj --enable-languages=c,c++ --enable-shared
--enable-threads=posix --enable-__cxa_atexit --enable-clocale=gnu
Thread model: posix
gcc version 3.4.4 (Gentoo 3.4.4-r1, ssp-3.4.4-1.0, pie-8.7.8)
--
Summary: no typeinfo for template class if requested by
__attribute__(((visibility("default")))
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: aribrei at arcor dot de
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25592
