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These cases are recorded in the list of undefined behavior, items 104, 108, 116, 118, and 130.
Programmers should never attempt to access anything underlying any of these macros.
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| Code Block | ||
|---|---|---|
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#include <myassert.h>
#include <assert.h>
void fullAssert(int e) {
assert(0 < e); // standard library assert()
myassert(e); // well defined custom assertion function
}
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Noncompliant Code Example (
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Redefining errno)
Legacy code is apt to include an incorrect declaration such as the following.
| Code Block | ||
|---|---|---|
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extern int errno; |
Compliant Solution (
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Redefining errno)
The correct way to declare errno is to include the header <errno.h>.
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