CMP0121ΒΆ
New in version 3.21.
The list()
command now detects invalid indices.
Prior to CMake version 3.21, the list()
command's GET
,
INSERT
, SUBLIST
, and REMOVE_AT
subcommands did not detect invalid
index arguments.
The OLD
behavior of this policy is for invalid indices to be treated as
their integer value (if any) at the start of the string. For example,
2good4you
is a 2
and not_an_integer
is a 0
. The NEW
behavior is for invalid indices to trigger an error.
This policy was introduced in CMake version 3.21. CMake version 3.26.6
warns when the policy is not set and uses OLD
behavior. Use the
cmake_policy()
command to set it to OLD
or NEW
explicitly.
Note
The OLD
behavior of a policy is
deprecated by definition
and may be removed in a future version of CMake.