[Boost-users] BGL runtime crash with g++ -O2 optimizer.

From: Franck.Caron_at_[hidden]
Date: 2003-09-29 11:53:23

Hi all, 

I have a problem while compiling BGL with gcc 3.1.1 on solaris7 with the -O2
optimizer option.
All is ok with -g (debug)  but -O2 produce a crash at runtime 

Here is a code that reproduce the problem :

#include <boost/graph/adjacency_list.hpp>
#include <boost/graph/properties.hpp>
#include <iostream>
#include <string>

using namespace std;
using namespace boost;

struct VertexPropertyTag {
  typedef vertex_property_tag kind;
};

typedef property<VertexPropertyTag,string> VertexProp;

typedef adjacency_list<setS,vecS,bidirectionalS,VertexProp> Graph;

int main(){
  Graph graph;
  graph_traits<Graph>::vertex_descriptor v1 =
add_vertex(string("s1"),graph);
  graph_traits<Graph>::vertex_descriptor v2 =
add_vertex(string("s2"),graph);

  add_edge(v1,v2,graph);
  graph_traits<Graph>::edge_iterator eIt,eItEnd;
  tie(eIt,eItEnd) = edges(graph);
  for(;eIt != eItEnd;++eIt){
    cout << "->" <<  *eIt << endl;
  }
  
  return 0;
}

With        
 g++ -Wall -pedantic -fPIC -g -c -o solaris7/gcc3.1/Main.o Main.cc -I.
-I/opt/boost_1.30.2 
 g++ -fPIC -o solaris7/gcc3.1/testbug.exe solaris7/gcc3.1/Main.o  -L
/opt/boost_1.30.2/libs/gcc3.1/release/single-thread -R   -Wl,-Bdynamic

Here is the result :

shell> solaris7/gcc3.1/testbug.exe
->(0,1)

It is OK

With        
 g++ -Wall -pedantic -fPIC -O2   -c -o solaris7/gcc3.1/Main.o Main.cc -I.
-I/opt/boost_1.30.2 
 g++ -fPIC -o solaris7/gcc3.1/testbug.exe solaris7/gcc3.1/Main.o  -L
/opt/boost_1.30.2/libs/gcc3.1/release/single-thread -R   -Wl,-Bdynamic

Here is the result :

shell> solaris7/gcc3.1/testbug.exe
->(0,1)
->(0,0)
Bus error (core dumped)

Does anybody already had this ? 
Is it a bug in my code, in BGL or in gcc ? 

Thanks for the help.

Franck