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i.e. the log level can be set to 0 and there are still messages written to stdout. Reason: CbcMain.cpp line 14402ff (master). It looks like a debugging hack that slipped...

There are lots of different #defines in Cbc and its dependencies. I ran some script over the source code. Note that this script is not a valid C++ preprocessor. It...

In ClpNetworkMatrix.cpp line 1220: ``` int *which = new int[rhs.numberRows_]; ``` this array is never delete'd. I'm preparing a list with similar leaks (or a PR to fix them). Is...

Presolve leads to multiple 'WARNING: Untransformed solution with objective[...] is violated by 0.42 for the original model'

7

For the attached MIP model HiGHS with default options struggles to find a feasible solution. Instead ``` WARNING: Untransformed solution with objective 1.50762e+08 is violated by 0.42 for the original...

violated assert in CbcSOS.cpp line 564

3

1.) unpack the attached lp file 2.) run "cbc foo.lp -threads 4 -solve -quit" using a debug build of CBC 3.) Cbc aborts with the message ``` cbc: /tmp/cbc/src/CbcSOS.cpp:564: virtual...

use of unitialised data in src/cpu/include/gsl/gsl_vector.h

1

The "data" member is not initialised (src/cpu/include/gls/gsl_vector.h, line 27). This causes a lot of "Conditional jump or move depends on uninitialised value(s)" with valgrind. Although I did not notice any...

in line 638 of CglLandP.cpp a warm start basis is allocated but never freed.

fix undefined behavour due to memcpy(ptr, NULL, 0)

2

passing NULL to memcpy is undefined behaviour. But: Does memcpy actually causes trouble? probably not - it's hard to image an implementation that does not 'accidently' gets it right. I...

Cgl012cut.cpp is not threadsafe

3

In Cgl012cut.cpp line 3289: ``` static double max_score_ever = ZERO; /* maximum score of a violated cut during the whole cutting plane procedure */ ``` this global variable is used...

CglKnapsackCover::exactSolveKnapsack sometimes returns suboptimal solutions. Example: ``` int main() { const int n = 6; const double c = 7.0; const double pp[] = { 10.0, 5.0, 2, 2, 1.4,...