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Fedora Update Notification
FEDORA-2019-729fa53b10
2019-05-03 03:40:56.513764
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Name : dwarves
Product : Fedora 29
Version : 1.13
Release : 1.fc29
URL :
http://acmel.wordpress.com
Summary : Debugging Information Manipulation Tools (pahole & friends)
Description :
dwarves is a set of tools that use the debugging information inserted in
ELF binaries by compilers such as GCC, used by well known debuggers such as
GDB, and more recent ones such as systemtap.
Utilities in the dwarves suite include pahole, that can be used to find
alignment holes in structs and classes in languages such as C, C++, but not
limited to these.
It also extracts other information such as CPU cacheline alignment, helping
pack those structures to achieve more cache hits.
These tools can also be used to encode and read the BTF type information format
used with the Linux kernel bpf syscall, using 'pahole -J' and 'pahole -F
btf'.
A diff like tool, codiff can be used to compare the effects changes in source
code generate on the resulting binaries.
Another tool is pfunct, that can be used to find all sorts of information about
functions, inlines, decisions made by the compiler about inlining, etc.
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Update Information:
New release: 1.13 Will be used when building the Linux kernel, from 5.2 onwards,
to convert DWARF into BTF for use by BPF ---- Please read the README.btf to
see how to test the feature that triggered the tagging of this release, other
than that, read the NEWS files to see the bugs fixed and new DWARF tags
supported in this release.
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ChangeLog:
* Tue Apr 23 2019 Arnaldo Carvalho de Melo <acme(a)redhat.com> - 1.13-1
- New release: 1.13
- Infer __packed__ attributes, i.e. __attribute__((__packed__))
- Support DW_AT_alignment, i.e. __attribute__((__aligned__(N)))
- Decode BTF type format and pretty print it
- BTF encoding fixes
- Use libbpf's BTF deduplication
- Support unions as arguments to -C/--class
- New 'pfunct --compile' generates compilable output with type definitions
* Thu Jan 31 2019 Fedora Release Engineering <releng(a)fedoraproject.org> - 1.12-2
- Rebuilt for
https://fedoraproject.org/wiki/Fedora_30_Mass_Rebuild
* Fri Aug 31 2018 Arnaldo Carvalho de Melo <acme(a)redhat.com> - 1.12-1
- New release: 1.12
- union member cacheline boundaries for all inner structs
- print union member offsets
- Document 'pahole --hex'
- Encode BTF type format for use with eBPF
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This update can be installed with the "dnf" update program. Use
su -c 'dnf upgrade --advisory FEDORA-2019-729fa53b10' at the command
line. For more information, refer to the dnf documentation available at
http://dnf.readthedocs.io/en/latest/command_ref.html#upgrade-command-label
All packages are signed with the Fedora Project GPG key. More details on the
GPG keys used by the Fedora Project can be found at
https://fedoraproject.org/keys
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