diff options
| -rw-r--r-- | mach/mig_strncpy.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/mach/mig_strncpy.c b/mach/mig_strncpy.c index b0c001d775..dbd0a08e56 100644 --- a/mach/mig_strncpy.c +++ b/mach/mig_strncpy.c @@ -6,6 +6,14 @@ vm_size_t __mig_strncpy (char *dst, const char *src, vm_size_t len) { - return __stpncpy (dst, src, len) - dst; + if (len == 0) + return 0; + + char *end = __stpncpy (dst, src, len - 1); + vm_size_t ret = end - dst; + /* Null terminate the string. */ + if (ret == len - 1) + *end = '\0'; + return ret; } weak_alias (__mig_strncpy, mig_strncpy) |