[MacPorts] #57726: pgplot demo 'cpgdemo' segfaults with variant gcc8, ok with gcc7

[MacPorts]

#57726: pgplot demo 'cpgdemo' segfaults with variant gcc8, ok with gcc7
--------------------+--------------------
Reporter: d-lamb | Owner: (none)
Type: defect | Status: new
Priority: Normal | Milestone:
Component: ports | Version:
Keywords: | Port: pgplot
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Just like the title says. I installed the default pgplot
@5.2.2_11+gcc8+x11, and the demos /opt/local/share/pgplot/examples/pgdemo*
work just fine, but cpgdemo (which shows the C-language bindings) in that
same directory segfaults when drawing the second plot.

I installed pgplot @5.2.2_11+gcc7+x11, and now cpgdemo works just fine.
Is there something special about how the C interface libcpgplot.dylib gets
made with gcc8?

[MacPorts]

#57726: pgplot demo 'cpgdemo' segfaults with variant gcc8, ok with gcc7
---------------------+---------------------------------
Reporter: d-lamb | Owner: MarcusCalhoun-Lopez
Type: defect | Status: assigned
Priority: Normal | Milestone:
Component: ports | Version:
Resolution: | Keywords:
Port: pgplot |
---------------------+---------------------------------
Changes (by jmroot):

* owner: (none) => MarcusCalhoun-Lopez
* status: new => assigned