diff options
Diffstat (limited to 'sysdeps/posix/ctermid.c')
| -rw-r--r-- | sysdeps/posix/ctermid.c | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/sysdeps/posix/ctermid.c b/sysdeps/posix/ctermid.c index 0ef9a3fe23..ca81d4201f 100644 --- a/sysdeps/posix/ctermid.c +++ b/sysdeps/posix/ctermid.c @@ -19,17 +19,18 @@ #include <string.h> -/* Return the name of the controlling terminal. - If S is not NULL, the name is copied into it (it should be at - least L_ctermid bytes long), otherwise a static buffer is used. */ +/* Return the name of the controlling terminal. If S is not NULL, the + name is copied into it (it should be at least L_ctermid bytes + long), otherwise we return a pointer to a non-const but read-only + string literal, that POSIX states the caller must not modify. */ char * ctermid (s) char *s; { - static char name[L_ctermid]; + char *name = (char /*drop const*/ *) "/dev/tty"; if (s == NULL) - s = name; + return name; - return strcpy (s, "/dev/tty"); + return strcpy (s, name); } |