[Help-glpk] Hit an assert

[Neill Clift]

Is this likely a problem with my code or a bug in glpk? Looks to be 
reproducible. I can dump more info if needed.

Assertion failed: tcol[csa->p] != 0.0
Error detected in file ..\src\simplex\spydual.c at line 999

      /* FIXME: tcol[p] and trow[q] should be close to each other */
      xassert(tcol[csa->p] != 0.0);

     glpk_4_57.dll!abort() Line 88    C
     glpk_4_57.dll!errfunc(const char * fmt, ...) Line 55    C
>    glpk_4_57.dll!dual_simplex(csa * csa) Line 999    C
     glpk_4_57.dll!_glp_spy_dual(glp_prob * P, const glp_smcp * parm) 
Line 1158    C
     glpk_4_57.dll!solve_lp(glp_prob * P, const glp_smcp * parm) Line 
250    C
     glpk_4_57.dll!glp_simplex(glp_prob * P, const glp_smcp * parm) 
Line 459    C
     glpk_4_57.dll!_glp_ios_solve_node(glp_tree * tree) Line 1359 C
     glpk_4_57.dll!_glp_ios_driver(glp_tree * T) Line 1036    C
     glpk_4_57.dll!solve_mip(glp_prob * P, const glp_iocp * parm, 
glp_prob * P0, NPP * npp) Line 252    C
     glpk_4_57.dll!glp_intopt(glp_prob * P, const glp_iocp * parm) Line 
627    C
     split.exe!DoSimplex(_BLIST * List, unsigned long n, unsigned long 
index, _OPERATION operation, unsigned long min, unsigned char * 
Feasable) Line 1086    C