** Also affects: python3-defaults (Ubuntu) Importance: Undecided Status: New
** Description changed: When calculating the exponential of a negative number in python 3.6 with the Ubuntu 18.04 Docker image (ppcle64), I receive a segfault. ``` - python -c "import math; math.exp(-1)" + python3 -c "import math; math.exp(-1)" qemu: uncaught target signal 11 (Segmentation fault) - core dumped Segmentation fault ``` I am running this in Docker on macOS. Here are the steps to reproduce the error. ``` docker run --rm -it --platform linux/ppc64le ubuntu:18.04 apt-get update -qq && apt-get install -y -qq python3 python3 -c "import math; print(math.exp(0))" # 1.0 python3 -c "import math; print(math.exp(-0))" # 1.0 python3 -c "import math; print(math.exp(1))" # 2.718281828459045 python3 -c "import math; print(math.exp(-1))" ``` This error does not happen when using the debian:10 or alpine images. Here is the output of docker version on my machine: ``` Client: Docker Engine - Community - Version: 19.03.8 - API version: 1.40 - Go version: go1.12.17 - Git commit: afacb8b - Built: Wed Mar 11 01:21:11 2020 - OS/Arch: darwin/amd64 - Experimental: true + Version: 19.03.8 + API version: 1.40 + Go version: go1.12.17 + Git commit: afacb8b + Built: Wed Mar 11 01:21:11 2020 + OS/Arch: darwin/amd64 + Experimental: true Server: Docker Engine - Community - Engine: - Version: 19.03.8 - API version: 1.40 (minimum version 1.12) - Go version: go1.12.17 - Git commit: afacb8b - Built: Wed Mar 11 01:29:16 2020 - OS/Arch: linux/amd64 - Experimental: true - containerd: - Version: v1.2.13 - GitCommit: 7ad184331fa3e55e52b890ea95e65ba581ae3429 - runc: - Version: 1.0.0-rc10 - GitCommit: dc9208a3303feef5b3839f4323d9beb36df0a9dd - docker-init: - Version: 0.18.0 - GitCommit: fec3683 + Engine: + Version: 19.03.8 + API version: 1.40 (minimum version 1.12) + Go version: go1.12.17 + Git commit: afacb8b + Built: Wed Mar 11 01:29:16 2020 + OS/Arch: linux/amd64 + Experimental: true + containerd: + Version: v1.2.13 + GitCommit: 7ad184331fa3e55e52b890ea95e65ba581ae3429 + runc: + Version: 1.0.0-rc10 + GitCommit: dc9208a3303feef5b3839f4323d9beb36df0a9dd + docker-init: + Version: 0.18.0 + GitCommit: fec3683 ``` Cross-posted to StackOverflow: https://stackoverflow.com/questions/61084969/python-segfault- calculating-exponential-of-negative-ppc64le -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1871451 Title: powerpc segfault on exponential of negative in python To manage notifications about this bug go to: https://bugs.launchpad.net/cloud-images/+bug/1871451/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs