Hi,
the glp_copy_prob() does not create name index in glpk 4.33.
The patch solves the problem.
Best, Balazs
*** src/glpapi01.c~ Thu Oct 30 10:00:00 2008
--- src/glpapi01.c Sat Nov 8 13:37:41 2008
***************
*** 1254,1259 ****
--- 1254,1261 ----
xerror("glp_copy_prob: names = %d; invalid parameter\n",
names);
glp_erase_prob(dest);
+ if (names && prob->r_tree != NULL)
+ glp_create_index(dest);
if (names && prob->name != NULL)
glp_set_prob_name(dest, prob->name);
if (names && prob->obj != NULL)
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