Solution about error "double free or corruption (out)" in Ubuntu 18.04 environment

[zhh2005757]

Is your feature request related to a problem? Please describe.
When running the repo codes in Ubuntu 18.04, it always reports "double free or corruption (out)" error. GDB finds out that the error is from "dataset.emplace_back(std::make_shared(data_path, bag_name));" in the codes, more specifically, from libiridescence.so.

Describe the solution you tried
This bug is due to the "-march=native" flag in Iridescence compilation. What we should do is turn on the cmake option "BUILD_WITH_MARCH_NATIVE" in CMakelists.txt of Iridescence repo and re-make (install) it. Then the viewer of this calibration program can work!

[koide3]

Thanks for the detailed issue report. I guess you manually built and installed PCL (or some other libraries)? The error may stem from an inconsistent use of -march=naive option for dependency libraries. Mixing libraries built with/without -march=native causes segfaults. While "apt"-installed libraries are built without this flag, manual installation often enables it.

[zhh2005757]

Yes I manually installed pcl 1.10 since the Ubuntu 18.04 built-in pcl library is 1.8. I think you are right that this error is caused due to the mismatching -march=native flags in different libraries.

[koide3]

Thanks for confirming. I think this information is useful for people in the community.