Bug#990220: wrong code generation for bpftrace

[Julian Taylor]

Package: llvm-toolchain-11
Version: 1:11.0.1-2
Tags: patch

bpftrace in debian testing suffers from a code generation bug in llvm11:

https://github.com/iovisor/bpftrace/issues/1305  <https://github.com/iovisor/bpftrace/issues/1305>

To reproduce run:
apt-get install bpftrace
/usr/sbin/tcpconnect.bt

connect to a https site.
the DPORT column will contain wrong values (13429)

This was fixed in llvm12, see
https://reviews.llvm.org/D88525
https://bugs.llvm.org/show_bug.cgi?id=47591

A patch is available here: https://reviews.llvm.org/D91833

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