diff options
| -rw-r--r-- | lib/libc/string/memcpy.3 | 5 | ||||
| -rw-r--r-- | lib/libc/string/strcat.3 | 10 | ||||
| -rw-r--r-- | lib/libc/string/strcpy.3 | 10 |
3 files changed, 25 insertions, 0 deletions
diff --git a/lib/libc/string/memcpy.3 b/lib/libc/string/memcpy.3 index 25a6c359f1da..febc0fa34dd9 100644 --- a/lib/libc/string/memcpy.3 +++ b/lib/libc/string/memcpy.3 @@ -54,6 +54,11 @@ bytes from string .Fa src to string .Fa dst . +If +.Fa src +and +.Fa dst +overlap, the results are not defined. .Sh RETURN VALUES The .Fn memcpy diff --git a/lib/libc/string/strcat.3 b/lib/libc/string/strcat.3 index 802226980d27..a6d0fcef61f0 100644 --- a/lib/libc/string/strcat.3 +++ b/lib/libc/string/strcat.3 @@ -62,6 +62,11 @@ then add a terminating The string .Fa s must have sufficient space to hold the result. +If +.Fa s +and +.Fa append +overlap, the results are undefined. .Pp The .Fn strncat @@ -72,6 +77,11 @@ characters from .Fa append , and then adds a terminating .Ql \e0 . +If +.Fa s +and +.Fa append +overlap, the results are undefined. .Sh RETURN VALUES The .Fn strcat diff --git a/lib/libc/string/strcpy.3 b/lib/libc/string/strcpy.3 index 4d4a1ee7b3ce..bc555411dde1 100644 --- a/lib/libc/string/strcpy.3 +++ b/lib/libc/string/strcpy.3 @@ -63,6 +63,11 @@ to (including the terminating .Ql \e0 character.) +If +.Fa src +and +.Fa dst +overlap, the results are undefined. .Pp The .Fn stpncpy @@ -89,6 +94,11 @@ Otherwise, is .Em not terminated. +If +.Fa src +and +.Fa dst +overlap, the results are undefined. .Sh RETURN VALUES The .Fn strcpy |