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By using the invalid() function defined above, the function is less likely to modify memory outside its bounds (see MSC11-A. Incorporate diagnostic tests using assertions).
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void incr(int *intptr) {
if (invalid( intptr)) {
/* handle error */
}
*intptr++;
}
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Since invalid pointers are often indicative of a bug in the program, one can use the assert() macro to terminate immediately if an invalid pointer is discovered (see MSC11-A. Incorporate diagnostic tests using assertions).
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#include <assert.h>
void incr(int *intptr) {
assert(!invalid( intptr));
*intptr++;
}
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