Ubuntu package segfaults, dlang ldc not

[Yannick]

In Ubuntu 20.04.1 (LTS) the ldc compiler (1:1.20.1-1) behaves differently compared to the same version of the LLVM D compiler installed from dlang.org.

We found the bug investigating a segfault in the OneDrive Client for Linux. Onedrive compiled with the Ubuntu ldc package segfaults when ^C is issued during operation.
The expected behaviour is that the application does not sefault. If onedrive is compiled using the DMD compiler or ldc compiler installed via dlang.org/install.sh (also version 1.20.1), the application does not segfault. So the Ubuntu ldc package behaves differently and seems to cause the issue.

Downstream bug report with build logs can be found here:
https://github.com/abraunegg/onedrive/issues/1053

Ubuntu Version:
Description: Ubuntu 20.04.1 LTS
Release: 20.04

Ubuntu ldc package:
ldc:
  Installiert: 1:1.20.1-1
  Installationskandidat: 1:1.20.1-1
  Versionstabelle:
 *** 1:1.20.1-1 500
        500 http://de.archive.ubuntu.com/ubuntu focal/universe amd64 Packages
        100 /var/lib/dpkg/status

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Dominik Stadler (dominik-stadler)]

A more detailed stacktrace is available in https://github.com/abraunegg/onedrive/issues/2034