Rule 12.2 and "nested assignment statements"

[pkruk]

Example from mc2_1203.c:

Code:

mc2_1203_x = sizeof ( mc2_1203_a = 1234U );

Is this code also a violation of rule 12.2 "nested assignment statements"?

[misra-c]

Code:

mc2_1203_x = sizeof ( mc2_1203_a = 1234U );

This is not a violation of Rule 12.2.
This is a violation of Rule 12.3.

mc2_1203_a = 1234U is not executed, so is not an assignment statement.