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RENESAS TOOL NEWS on November 16, 2004: RSO-SQMlint_2-041116D
A Note on Using SQMlint
(the MISRA C Rule Checker)
--On a Violation of Rule 60--
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Please take note of the following problem in using the SQMlint (the MISRA C rule checker, which extends the functionality of our compilers):
- On a violation of Rule 60
- Versions Concerned
SQMlint V.1.00 Release 1 and V.1.01 Release 00
- Description
Consider that in an "if-else if-else" construct, the program statement
of the second else contains an if statement without an else. Though
this does not violate Rule 60 in MISRA C, an error message may appear.
- 2.1 Conditions
- This problem occurs if the following conditions are all satisfied:
| (1) | There exists an if-else if-else construct. |
| (2) |
The program statement of the second else in (1) is enclosed with braces. |
| (3) |
The program statement in (2) contains an if statement without an else. |
- 2.2 Example
-------------------------------------------------------------
void func(void)
{
if( 1 ){ // Condition (1)
. . . . . . . . . . . . . . . . . .
} else if( 1 ) {
. . . . . . . . . . . . . . . . . .
} else { // Condition (2)
if( 1 ){ // Condition (3)
. . . . . . . . . . . . . . . . . .
}
}
}
-------------------------------------------------------------
- Workaround
Neglect the error message appearing under the conditions stated in 2.1.
- Schedule of Fixing the Problem
We plan to fix this problem in our next release of the product.
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