Dear all,

I have run into some problems when trying to run the compressible flow solver.

First, some background:

- code build was complete without any issues, with all dependencies pre-installed system-wide, and without any problems in linking to these libraries

- ran all regression tests, all successful

- ran the Incompressible NS Solver, both serial and parallel without issues

- ran the ADR Solver without issues

The code was compiled and ran on a personal workstation, with Ubuntu 16.04 as the Linux distribution.

I am not an advanced Linux user, having started to work in it only recently, and thus identifying the exact issue is not possible for me at this stage.

The compressible flow solver always fails, even for the isentropic vortex case provided as example with the distribution.

[salv08976-ub:03370] Signal: Segmentation fault (11)
[salv08976-ub:03370] Signal code: Address not mapped (1)
[salv08976-ub:03370] Failing at address: 0x1573bc50
[salv08976-ub:03370] [ 0] /lib/x86_64-linux-gnu/libc.so.6(+0x354b0)[0x7fb38f0b04b0]
[salv08976-ub:03370] [ 1] /home/local/ISDADS/sgs475/Nektar++/nektar++-4.4.1/build/dist/lib64/nektar++-4.4.1/libLibUtilities.so.4.4.1(_ZN6Nektar12LibUtilities27AnalyticExpressionEvaluator8StorePrm8run_onceEv+0xb)[0x7fb39087b39b]
[salv08976-ub:03370] [ 2] /home/local/ISDADS/sgs475/Nektar++/nektar++-4.4.1/build/dist/lib64/nektar++-4.4.1/libLibUtilities.so.4.4.1(_ZN6Nektar12LibUtilities27AnalyticExpressionEvaluator8EvaluateEi+0x6e)[0x7fb39087514e]
[salv08976-ub:03370] [ 3] /home/local/ISDADS/sgs475/Nektar++/nektar++-4.4.1/build/dist/lib64/nektar++-4.4.1/libSolverUtils.so.4.4.1(_ZNK6Nektar12LibUtilities8Equation8EvaluateEv+0x38)[0x7fb391cc8508]
[salv08976-ub:03370] [ 4] /home/local/ISDADS/sgs475/Nektar++/nektar++-4.4.1/build/dist/lib64/nektar++-4.4.1/libLibUtilities.so.4.4.1(_ZN6Nektar12LibUtilities13SessionReader14ReadParametersEP12TiXmlElement+0x26d)[0x7fb3907bacbd]
[salv08976-ub:03370] [ 5] /home/local/ISDADS/sgs475/Nektar++/nektar++-4.4.1/build/dist/lib64/nektar++-4.4.1/libLibUtilities.so.4.4.1(_ZN6Nektar12LibUtilities13SessionReader13ParseDocumentEv+0x92)[0x7fb3907c2612]
[salv08976-ub:03370] [ 6] /home/local/ISDADS/sgs475/Nektar++/nektar++-4.4.1/build/dist/lib64/nektar++-4.4.1/libLibUtilities.so.4.4.1(_ZN6Nektar12LibUtilities13SessionReader11InitSessionEv+0x4f)[0x7fb3907c6aff]
[salv08976-ub:03370] [ 7] ./CompressibleFlowSolver(_ZN6Nektar12LibUtilities13SessionReader14CreateInstanceEiPPc+0x16d)[0x48ef6d]
[salv08976-ub:03370] [ 8] ./CompressibleFlowSolver(main+0x62)[0x454b52]
[salv08976-ub:03370] [ 9] /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf0)[0x7fb38f09b830]
[salv08976-ub:03370] [10] ./CompressibleFlowSolver(_start+0x29)[0x463219]
[salv08976-ub:03370] *** End of error message ***