Moderators: david ward, misra cpp
- Posts: 8
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MISRA C:2012 Rule 14.2 puts the following restriction on the "third clause" (called "expression" in C++:2008):
Shall not use objects that are modified in the for loop body.
For example, the following violates this rule:
Code: Select all
for (int i=0; i<500; i = i + j)
j = random();
I can't find a corresponding rule in C++:2008. Am I overlooking something?
- Stephen H. Westin
- Posts: 150
- Joined: Mon Jun 02, 2008 1:55 pm
- Company: MISRA
Your example violates rule 6-5-4
i is a loop counter (initialised before the condition, tested with a relational operator in the condition and modified in the expression).
6-5-4 requires that the loop counter shall only be modified by one of ++ -- += n or -= n where n is constant for the duration of the loop
Posted by and on behalf of
the MISRA C++ Working Group