Re: [Bug-glpk] glpsol: crash on display

[xypron]

Hello Andrew,

set B := A;
set A := {1};
display A;

results in
test.mod 1: A not defined.

set A := A;
display A;

results in a segmentation fault.

The error is in function
SET *set_statement(MPL *mpl)


node = avl_insert_node(mpl->tree, set->name);
should be executed after evaluating the right hand side.

Please move the following code to the end of the function:

      if (set->dimen == 0) set->dimen = 1;
      /* include the set name in the symbolic names table */
      {  AVLNODE *node;
         node = avl_insert_node(mpl->tree, set->name);
         avl_set_node_type(node, A_SET);
         avl_set_node_link(node, (void *)set);
      }
      /* the set statement has been completely parsed */
      xassert(mpl->token == T_SEMICOLON);
      get_token(mpl /* ; */);
      return set;
}


Best regards

Xypron



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