mirror of
https://github.com/systemd/systemd-stable.git
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Backports of patch from systemd git to stable distributions
51c682df38
internal_hashmap_first_key_and_value() returns the first value, or %NULL
if the hashmap is empty.
However, hashmaps may contain %NULL values. That means, a caller getting
%NULL doesn't know whether the hashmap is empty or whether the first
value is %NULL.
For example, a caller may be tempted to do something like:
if ((val = hashmap_steal_first_key_and_value (h, (void **) key))) {
// process first entry.
}
But this is only correct if the caller made sure that the hash is either
not empty or contains no NULL values.
Anyway, since a %NULL return value can signal an empty hash or a %NULL
value, it seems error prone to leave the key output argument
uninitialized in situations that the caller cannot clearly distinguish
(without making additional assumptions).
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| .lgtm/cpp-queries | ||
| .mkosi | ||
| catalog | ||
| coccinelle | ||
| docs | ||
| factory/etc | ||
| hwdb | ||
| man | ||
| modprobe.d | ||
| network | ||
| po | ||
| presets | ||
| rules | ||
| shell-completion | ||
| src | ||
| sysctl.d | ||
| sysusers.d | ||
| test | ||
| tmpfiles.d | ||
| tools | ||
| travis-ci | ||
| units | ||
| xorg | ||
| .dir-locals.el | ||
| .editorconfig | ||
| .gitattributes | ||
| .gitignore | ||
| .lgtm.yml | ||
| .mailmap | ||
| .travis.yml | ||
| .vimrc | ||
| .ycm_extra_conf.py | ||
| configure | ||
| LICENSE.GPL2 | ||
| LICENSE.LGPL2.1 | ||
| Makefile | ||
| meson_options.txt | ||
| meson.build | ||
| mkosi.build | ||
| mkosi.default | ||
| NEWS | ||
| README | ||
| README.md | ||
| TODO | ||
| zanata.xml | ||
systemd - System and Service Manager
Details
General information about systemd can be found in the systemd Wiki.
Information about build requirements is provided in the README file.
Consult our NEWS file for information about what's new in the most recent systemd versions.
Please see the Hacking guide for information on how to hack on systemd and test your modifications.
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