[SCIP] Debugging segfault.

[Leon Eifler]

Hello Marco,

> SCIPsetLPFeastol(p_scip, 1e-9)
>
> Using a debugger doesn't help (I guess because I haven't compiled SCIP 
> with debug info), so I was looking at the source code and wanted to 
> make sure I am calling this function from the right "stage". So I 
> inserted these lines just before the above one:
you can only call that function in the solving stage (since the LP does 
not exist before). Why don't you just recompile with Debug info? ( In 
make it is `make OPT=dbg` in cmake it is `cmake -DCMAKE_BUILD_TYPE=Debug` )
>
> SCIP_CALL(SCIPprintStage(p_env, stdout));
> fflush(stdout);

SCIPprintStage takes a SCIP* and a FILE*, so if you want to print to 
Standard output you should use `SCIPprintStage(p_scip, NULL)` (assuming 
p_scip is your SCIP*).

Best,
Leon


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