Hello Stefan, currently Rglpk will cause the R process to be terminated if an error occurs in the GLPK library.
You can use the following GMPL file (test.mod) for testing: var x, >=0; minimize obj : x + 5; end; Now start R and library(Rglpk) x <- Rglpk_read_file( "/home/user/test.mod", type = "MathProg", verbose = TRUE) Rglpk_solve_LP(x$objective, x$constraints[[1]], x$constraints[[2]], x$constraints[[3]], x$bounds, x$types, x$maximum) The GLPK library detects that the problem has no constraint and terminates the R process. I have patched the sources such that an error is correctly handled. See appendix. Rglpk_solve and Rglpk_read_file call glp_error_hook(Rglpk_error_hook, &env); This sets the hook function to Rglpk_error_hook. A far jump is used to return if an error occurs. Best regards Heinrich Schuchardt
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