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| author | Ludovic Courtès <ludo@gnu.org> | 2015-05-11 22:21:31 +0200 |
|---|---|---|
| committer | Ludovic Courtès <ludo@gnu.org> | 2015-05-11 23:01:20 +0200 |
| commit | 1303a4a4517260def862ce7fe97e6b28dd8005e1 (patch) | |
| tree | 1aa55bda57bd4ff8f951bf4aa5a84045eae220f5 /nix/libutil/util.hh | |
| parent | 2320ea1a51ce707ca19967f50e6fbedefafe14c4 (diff) | |
| download | guix-1303a4a4517260def862ce7fe97e6b28dd8005e1.tar guix-1303a4a4517260def862ce7fe97e6b28dd8005e1.tar.gz | |
daemon: Fix possible use-after-free.
This is essentially a backport of
<https://github.com/NixOS/nix/commit/f52b6c944e90b3e35925122779175705fdc02e12>
by Eelco Dolstra <eelco.dolstra@logicblox.com>.
The use-after-free bug would typically manifest when building with
GCC 5.1.
Diffstat (limited to 'nix/libutil/util.hh')
| -rw-r--r-- | nix/libutil/util.hh | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/nix/libutil/util.hh b/nix/libutil/util.hh index ce2d77c19a..a70981877b 100644 --- a/nix/libutil/util.hh +++ b/nix/libutil/util.hh @@ -257,6 +257,11 @@ void killUser(uid_t uid); string runProgram(Path program, bool searchPath = false, const Strings & args = Strings()); +/* Convert a list of strings to a null-terminated vector of char + *'s. The result must not be accessed beyond the lifetime of the + list of strings. */ +std::vector<const char *> stringsToCharPtrs(const Strings & ss); + /* Close all file descriptors except stdin, stdout, stderr, and those listed in the given set. Good practice in child processes. */ void closeMostFDs(const set<int> & exceptions); |