diff options
Diffstat (limited to 'sysdeps/posix')
| -rw-r--r-- | sysdeps/posix/getcwd.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/sysdeps/posix/getcwd.c b/sysdeps/posix/getcwd.c index e147a31a81..9d5787b6f4 100644 --- a/sysdeps/posix/getcwd.c +++ b/sysdeps/posix/getcwd.c @@ -187,6 +187,13 @@ __getcwd_generic (char *buf, size_t size) size_t allocated = size; size_t used; + /* A size of 1 byte is never useful. */ + if (allocated == 1) + { + __set_errno (ERANGE); + return NULL; + } + #if HAVE_MINIMALLY_WORKING_GETCWD /* If AT_FDCWD is not defined, the algorithm below is O(N**2) and this is much slower than the system getcwd (at least on |