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- Do not need to set
errnoon an error. - Have undefined behavior if the value of the result cannot be represented. (See undefined behavior 119118 of Annex J of the C Standard.)
- Return 0 if the string does not represent an integer (which is indistinguishable from a correctly formatted, zero-denoting input string), but the C Standard only specifies the behavior of these functions on success.
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Tool | Version | Checker | Description | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Astrée |
| bad-function | Fully checked | ||||||
| Axivion Bauhaus Suite |
| CertC-ERR07 | |||||||
| LDRA tool suite |
| 44 S, 593 S, 594 S | Partially implemented | ||||||
| Parasoft C/C++test |
| CERT_C-ERR07-a | The library functions atof, atoi and atol from library stdlib.h shall not be used | ||||||
| PC-lint Plus |
| 586 | Fully supported | ||||||
| RuleChecker |
| bad-function | Fully checked |
...