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The analyzer has detected a potential error in an expression with address arithmetic. Addition/subtraction operations are performed over an expression which is a double type conversion. It may be a misprint: the programmer forgot to put the first type conversion and addition operation into brackets.
Consider an example of incorrect code:
ptr = (int *)(char *)p + offset_in_bytes;The programmer was most likely expecting the 'p' variable to be cast to the 'char *' type, the shift in bytes added to it after that. Then the new pointer was expected to be cast to the 'int *' type.
But the missing parentheses turn this expression into a double type conversion and addition of the shift to the 'int'-pointer. The result will be different from the expected one. Such an error might well cause an array overrun.
This is the fixed code:
ptr = (int *)((char *)p + offset_in_bytes);This diagnostic is classified as:
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You can look at examples of errors detected by the V650 diagnostic. |
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