Description

[Description of the issue]

I have used libfive in pythonscad ( www.pythonscad.org) and compiled it with mxe for windows.
Some users report a illegal instruction segfault which happens inside libfive
[Steps to reproduce]

• download latest version of PythonSCAD(08/08)
• run it and watch it segfaulting
• debug with msys2/gdb to see the stack trace
• stacktrace can be found in https://www.reddit.com/r/pythonscad/comments/1el6d7d/comment/lh8smdz/?context=3

last understandable trace is libfive::OracleClause::installlibfive::TransformedOracleClause (name=...) at /home/gsohler/git/openscad/submodules/libfive/libfive/src/../include/libfive/oracle/oracle_clause.hpp:70

I have no idea, what that code does and why it causes segfaults in some systems, by maybe you can share a hint with me ?

The main bad issue about that is, that it happens in a static constructor which crashes the application even though the user does not need libfive

[What did you expect to happen? What happened? All the time?]
no crash

[Are there any error messages printed to the console?]

nope, only debugger reveals the real cause, windows is very silent about that

Versions

• Operating system:Windows10
• libfive commit hash: b1ea998
  • Is this the latest commit to master? no
• Qt version (if applicable): Qt5

Additional Information

Any additional information, configuration or data that might be necessary to reproduce the issue.