http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35688
--- Comment #7 from vincenzo Innocente <vincenzo.innocente at cern dot ch>
2011-11-07 09:23:30 UTC ---
The situation now is even more confused.
Most of the std algos have iterators as arguments. Visibility seems not to
propagate there..
below is my extensive test
compile as
c++ -O0 -shared -fPIC -fvisibility=hidden -o bha.so testICF.cpp
nm bha.so | c++filt
and look at the mixture of " t " and " T "
for instance
000000000000ad7f t void std::__adjust_heap<__gnu_cxx::__normal_iterator<C**,
std::vector<C*, std::allocator<C*> > >, long,
C*>(__gnu_cxx::__normal_iterator<C**, std::vector<C*, std::allocator<C*> > >,
long, long, C*)
000000000000afea T void
std::__iter_swap<true>::iter_swap<__gnu_cxx::__normal_iterator<C**,
std::vector<C*, std::allocator<C*> > >, __gnu_cxx::__normal_iterator<C**,
std::vector<C*, std::allocator<C*>
etc
cat testICF.cpp
#include<vector>
#include<algorithm>
#include<cmath>
struct A {
A(float q=0): v(q){}
float v;
bool operator<(A const & a) const { return v<a.v;}
};
struct B {
B(float q=0): v(q){}
bool operator<(B const & a) const { return v<a.v;}
float v;
};
struct C {
C(double q=0): v(q){}
bool operator<(C const & a) const { return v<a.v;}
double v;
};
float cosq(A const & a) {
return cos(a.v);
}
float cosq(B const & a) {
return cos(a.v);
}
template<typename T>
int game(std::vector<T> const & a, std::vector<T> & b) {
typedef typename std::vector<T>::const_iterator Iter;
for (Iter i=a.begin(); i!=a.end(); ++i) {
if ( (*i).v>0.) b.push_back((*i).v+1);
}
std::sort(b.begin(),b.end());
return b.size();
}
template<typename T>
int gamep(std::vector<T*> const & a, std::vector<T*> & b) {
typedef typename std::vector<T*>::const_iterator Iter;
for (Iter i=a.begin(); i!=a.end(); ++i) {
if ( (*i)->v>0.) b.push_back((*i));
}
std::sort(b.begin(),b.end());
return b.size();
}
namespace data /* __attribute__((visibility("default"))) */ {
std::vector<A> a;
std::vector<B> b;
std::vector<C> c;
std::vector<A*> ap;
std::vector<B*> bp;
std::vector<C*> cp;
}
#include<iostream>
int __attribute__((visibility("default"))) go() {
using namespace data;
int ret=0;
try {
ret+=game(a,a);
ret+=game(b,b);
ret+=game(c,c);
ret+=gamep(ap,ap);
ret+=gamep(bp,bp);
ret+=gamep(cp,cp);
} catch (std::exception & ce) {
std::cout << ce.what() << std::endl;
}
return ret;
}
