Other sources of bounds
Bounds may also be set by other parts of the implementation.
For example, the kernel may set bounds on pointers to new memory mappings (see
The CheriABI POSIX process environment),
and the system library may set bounds on pointers
into returned buffers from APIs — e.g., fgetln.
More detailed information on how C/C++ code can set bounds can be found in
C APIs to get and set capability properties.