PR: Add note for functions that are not compatible with static memory allocation

spec/API_specification/searching_functions.md

@@ -69,6 +69,11 @@ Returns the indices of the minimum values along a specified axis. When the minim
 (function-nonzero)=
 ### nonzero(x, /)
 
+```{note}
+
+This function does not support boolean array indexing.
+```
+
 Returns the indices of the array elements which are non-zero.
 
 #### Parameters
@@ -86,6 +91,11 @@ Returns the indices of the array elements which are non-zero.
 (function-where)=
 ### where(condition, x1, x2, /)
 
+```{note}
+
+This function does not support boolean array indexing.
+```
+
 Returns elements chosen from `x1` or `x2` depending on `condition`.
 
 #### Parameters

spec/API_specification/set_functions.md

@@ -15,6 +15,11 @@ A conforming implementation of the array API standard must provide and support t
 (function-unique)=
 ### unique(x, /, *, return_counts=False, return_index=False, return_inverse=False)
 
+```{note}
+
+This function does not support boolean array indexing.
+```
+
 Returns the unique elements of an input array `x`.
 
 #### Parameters