Public bug reported: in /usr/lib/x86_64-linux-gnu/cmake/pcl/PCLConfig.cmake, line 780, the cflags for PCL are defined like this: list(APPEND PCL_DEFINITIONS -march=native -msse4.2 -mfpmath=sse )
however, when using -march=native -msse4.2, even simple user-compiled programs crash in eigen's handmade_aligned_free. I attached a minimal testcase for this (the program crashes on ubuntu artful and bionic, but not on zesty). Problem was on a dell xps13 (since -march=native is hardware-dependent, on some systems the problem might not be reproducible) see also this email thread http://www.pcl-users.org/Segfaults-in-eigen-s -handmade-aligned-free-on-ubuntu-artful-td4045237.html CMakeLists.txt for the program in attach: cmake_minimum_required(VERSION 2.8) project(crashdemo) find_package(Boost 1.54 REQUIRED COMPONENTS filesystem) include_directories(${Boost_INCLUDE_DIRS}) link_directories(${Boost_LIBRARY_DIRS}) set(OUR_Boost_LIBRARIES ${Boost_LIBRARIES}) find_package(PCL 1.8 REQUIRED COMPONENTS common io segmentation visualization filters) add_definitions(${PCL_DEFINITIONS}) include_directories(${PCL_INCLUDE_DIRS}) link_directories(${PCL_LIBRARY_DIRS}) add_executable(crasher src/crasher.cpp ) target_link_libraries(crasher ${OUR_Boost_LIBRARIES} ${Boost_LIBRARIES} ${PCL_LIBRARIES} ) ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: libpcl-dev 1.8.1+dfsg1-2ubuntu2 ProcVersionSignature: Ubuntu 4.15.0-20.21-generic 4.15.17 Uname: Linux 4.15.0-20-generic x86_64 ApportVersion: 2.20.9-0ubuntu7 Architecture: amd64 CurrentDesktop: GNOME Date: Mon May 14 15:18:46 2018 InstallationDate: Installed on 2016-10-23 (567 days ago) InstallationMedia: Ubuntu 16.10 "Yakkety Yak" - Release amd64 (20161012.2) SourcePackage: pcl UpgradeStatus: Upgraded to bionic on 2018-05-09 (4 days ago) ** Affects: pcl (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug bionic ** Attachment added: "crasher.cpp" https://bugs.launchpad.net/bugs/1771124/+attachment/5139245/+files/crasher.cpp -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1771124 Title: libpcl cflags -march=native -msse4.2 makes user-compiled programs crash To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pcl/+bug/1771124/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
