assert in constructor causes chaos

[Samuel Krempp <krempp at cmla dot ens-cachan dot fr>]

The bug was reproduced with the following g++ :
gcc version 3.1 20010624 (experimental)
gcc version 3.1 20010707 (experimental)
i686-pc-linux-gnu

and is not present in
gcc version 3.0 20010402 (Debian prerelease)

The code is fairly simple.
putting an assert in the constructor seems to cause the ctor to be called
twice (so the second time, it fails..)

Also, the bug disappears when the class is not a template.

hth,
-- 
Sam
#include <cassert>


template<class charT >
class basic_format {
private:
  int                     style; 
  static const char ordered = 1, short_notation = 2;
public:
  basic_format(const charT* str, bool s_notation=false)
    : style(0)
  { //std::cerr<<" ctor "<<s_notation<<" style :"<<style<<std::endl;  
    assert( style == 0);
    if(style!=0) int n = *(int*) 0;
    if(s_notation) style |= short_notation; 
    style=5;}

  ~basic_format() {  }

  private:
  basic_format& operator= (const basic_format&);
  basic_format( const basic_format&);
};

int main(){
  using namespace std;

    basic_format<char>  a("blabla",true);
    //cerr<<" a done \n";

}