[2.96 20000417] -O1 generates bad code

[Ovidiu Toader]

This code illustrates the problem. The output should show twice "256 ==
256".
Correct output is obtained if:
** "E << n" is removed from the main
** E::operator<< is declared as "operator<<(int const)" instead of 
"operator<<(int const &)".


Ovidiu

phoenix:Work/C++/bug1> uname -a
Linux phoenix.physics.utoronto.ca 2.2.14 #5 Mon Feb 7 18:45:19 EST 2000
alpha un
known
phoenix:Work/C++/bug1> g++ -v
Reading specs from
/usr/local/Packages/lang/egcs.new/install/lib/gcc-lib/alphaev
67-unknown-linux-gnu/2.96/specs
gcc version 2.96 20000417 (experimental)
phoenix:Work/C++/bug1> cat bug.cc
#include <iostream>

struct Error {
  void operator<<(int const &) {
  }
};

void
check_size(int const size) {
  int n = size;
  cerr << "256 == " << n << endl;
  while( n%11 == 0 ){n /= 11;}
  while( n%13 == 0 ){n /= 13;}
  cerr << "256 == " << n << endl;
  Error E;
  E << n;
}

int
main(){

  check_size(256);

}
phoenix:Work/C++/bug1> g++ -O1 -o exe bug.cc
phoenix:Work/C++/bug1> exe
256 == 256
256 == 1169680