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Sergei Trofimovich b74962c92b src/libexpr/search-path.cc: avoid out-of-bounds read on string_view
Without the change build with `-D_GLIBCXX_ASSERTIONS` exposes testsuite
assertion:

    $ gdb src/libexpr/tests/libnixexpr-tests
    Reading symbols from src/libexpr/tests/libnixexpr-tests...
    (gdb) break __glibcxx_assert_fail
    (gdb) run
    (gdb) bt
    in std::__glibcxx_assert_fail(char const*, int, char const*, char const*)@plt () from /mnt/archive/big/git/nix/src/libexpr/libnixexpr.so
    in std::basic_string_view<char, std::char_traits<char> >::operator[] (this=0x7fffffff56c0, __pos=4)
        at /nix/store/r74fw2j8rx5idb0w8s1s6ynwwgs0qmh9-gcc-14.0.0/include/c++/14.0.0/string_view:258
    in nix::SearchPath::Prefix::suffixIfPotentialMatch (this=0x7fffffff5780, path=...) at src/libexpr/search-path.cc:15
    in nix::SearchPathElem_suffixIfPotentialMatch_partialPrefix_Test::TestBody (this=0x555555a17540) at src/libexpr/tests/search-path.cc:62

As string sizes are usigned types `(a - b) > 0` effectively means
`a != b`. While the intention should be `a > b`.

The change fixes test suite pass.
2023-08-14 22:07:37 +01:00
.github labeler: Stop removing labels 2023-07-31 22:51:06 +02:00
config Run autoupdate 2021-06-01 11:42:38 +02:00
contrib
doc Create outputOf primop. 2023-08-14 09:37:37 -04:00
m4
maintainers maintainers: add note on marking PRs as draft 2023-06-19 10:55:34 +02:00
misc Choose a reasonable number similar to LimitNOFile 2023-07-07 07:52:16 -07:00
mk Introduce notion of a test group, use for CA tests 2023-07-18 09:31:13 -04:00
perl Simplify ContentAddress 2023-07-07 07:30:01 -04:00
scripts Merge pull request #8512 from scarf005/install-show-uid 2023-06-15 13:49:44 +02:00
src src/libexpr/search-path.cc: avoid out-of-bounds read on string_view 2023-08-14 22:07:37 +01:00
tests Create outputOf primop. 2023-08-14 09:37:37 -04:00
.dir-locals.el
.editorconfig
.gitignore Expanded test suite 2023-07-11 21:43:09 -04:00
.version Bump version 2023-07-24 21:30:33 +02:00
boehmgc-coroutine-sp-fallback.diff Always disable GC in a coroutine unless the patch is applied 2023-04-07 14:54:38 +02:00
bootstrap.sh
configure.ac expand on the system type in hacking guide 2023-07-19 10:37:40 +02:00
CONTRIBUTING.md CONTRIBUTING.md: add link to "good first issues" 2023-06-19 10:39:19 +02:00
COPYING
default.nix add flake-compat to flake.nix and use sha256 in default.nix 2023-03-06 21:11:24 +01:00
docker.nix fix "add an option to include flake-registry..." 2023-05-16 14:35:31 +02:00
flake.lock add flake-compat to flake.nix and use sha256 in default.nix 2023-03-06 21:11:24 +01:00
flake.nix Allow tarball URLs to redirect to a lockable immutable URL 2023-06-13 14:17:45 +02:00
local.mk Enable -Werror=switch-enum 2023-04-03 18:45:20 +02:00
Makefile Introduce notion of a test group, use for CA tests 2023-07-18 09:31:13 -04:00
Makefile.config.in Generate API docs with Doxygen 2023-03-10 12:51:06 -05:00
precompiled-headers.h Config: Use nlohmann/json 2020-08-20 11:02:16 +02:00
README.md Improve hacking.md 2023-02-13 12:00:00 +04:00
shell.nix Remove url literals 2022-01-24 13:28:21 +01:00

Nix

Open Collective supporters Test

Nix is a powerful package manager for Linux and other Unix systems that makes package management reliable and reproducible. Please refer to the Nix manual for more details.

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