[Bug-glpk] Infinite loop

[VanReet, Jon]

Infinite loopI encountered a situation where I got into an infinite loop in the 
routine spx_simplex in the module glpspx2.c.  Thecall to thefunction 
spx_prim_feas located shortly after the feas: label returned LPX_E_OK and 
control passed to the label opt:.  The call to the routinespx_prim_opt returned 
LPX_E_INSTAB whichtransferred control back to label feas:.  This sequence then 
repeated without end.

I changedthe case statement after thespx_prim_opt call such thattheLPX_E_INSTAB 
return goes to label done: instead of feas:.

Jon Van Reet

SCADA Support

office (918) 574-7512

cell   (713) 416-3672

I encountered a situation where I got into an infinite loop in the routine spx_simplex in the module glpspx2.c.  The call to the function spx_prim_feas located shortly after the feas: label returned LPX_E_OK and control passed to the label opt:.  The call to the routine spx_prim_opt returned LPX_E_INSTAB which transferred control back to label feas:.  This sequence then repeated without end.

I changed the case statement after the spx_prim_opt call such that the LPX_E_INSTAB return goes to label done: instead of feas:.

Jon Van Reet

SCADA Support

office (918) 574-7512

cell   (713) 416-3672