GitLab

Bugzilla Link	16
Created on	Jun 15, 2003 16:55
Resolution	LATER
Resolved on	Jun 17, 2003 13:44
Version	1.00beta
OS	Linux
Architecture	PC
Attachments	tutu_dw, attachment

Extended Description

The following lines crashed the compiler in pde1.sac during the last masterrun:
import Array:all;
int main()
{
  h = 1d;
  f = [0d];
  z=0d;
  nrel=1;
#if 0  
  while (nrel <= 10) {
    u = h * f;
    z += u[0];
    nrel++;
  }
#else
  do {
    u = h * f;
    z += u[0];
    nrel++;
  }
  while( nrel<=10);
#endif
  return(nrel);
}
When compiling with -ssa -nocf the compiler crashes during AssociativeLaw
because of an invalid AVIS_SSAASSIGN reference for the h in line u = h * f;. 
I believe that this is not a bug in AssociativeLaw, but that the invalid
reference is introduced before AL. Most likely in LIR because with -nolir the
error does not occur.
However, an important observation is that the compiler only crashes if the loop
is a do ... while loop. The variant using the while-loop doesn't cause any trouble.