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author | Thomas Haller <thaller@redhat.com> | 2019-07-26 10:57:26 +0200 |
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committer | Lennart Poettering <lennart@poettering.net> | 2019-07-26 18:42:49 +0200 |
commit | 6fd79cca68a170c88e87b5d95cd7a44953df94e2 (patch) | |
tree | 512425bf519546e7b46fb75a3ed3a51fc9217631 | |
parent | 17f8fd9cf74b190c19140e16a0bf65de588bdbc7 (diff) | |
download | systemd-6fd79cca68a170c88e87b5d95cd7a44953df94e2.tar.gz systemd-6fd79cca68a170c88e87b5d95cd7a44953df94e2.tar.bz2 systemd-6fd79cca68a170c88e87b5d95cd7a44953df94e2.zip |
errno-util: return const string from strerror_safe()
C's strerror() function does not return a "const char *" pointer
for the string. That has historic reasons and C99 even comments
that "[t]he array pointed to shall not be modified by the program".
Make the strerror_safe() wrapper correct this and be more strict
in this regard.
-rw-r--r-- | src/basic/errno-util.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/basic/errno-util.h b/src/basic/errno-util.h index 34859d6d8a..6053cde62d 100644 --- a/src/basic/errno-util.h +++ b/src/basic/errno-util.h @@ -31,7 +31,7 @@ static inline int negative_errno(void) { return -errno; } -static inline char *strerror_safe(int error) { +static inline const char *strerror_safe(int error) { /* 'safe' here does NOT mean thread safety. */ return strerror(abs(error)); } |