The C Standard, 7.2123.5.3, paragraph 7 [ISO/IEC 9899:20112024], places the following restrictions on update streams:
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Tool | Version | Checker | Description | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Astrée |
| Supported, but no explicit checker | ||||||||||||||||
| Axivion Bauhaus Suite |
| CertC-FIO39 | ||||||||||||||||
| CodeSonar |
| IO.IOWOP | Input After Output Without Positioning | |||||||||||||||
| Compass/ROSE | Can detect simple violations of this rule | |||||||||||||||||
| Helix QAC |
| DF4711, DF4712, DF4713 | ||||||||||||||||
| Klocwork |
| CERT.FIO.NO_FLUSH | ||||||||||||||||
| LDRA tool suite |
| 84 D | Fully implemented | |||||||||||||||
| Parasoft C/C++test |
| CERT_C-FIO39-a | Do not alternately input and output from a stream without an intervening flush or positioning call | |||||||||||||||
| PC-lint Plus |
| 2478, 2479 | Fully supported | |||||||||||||||
| CERT C: Rule FIO39-C | Checks for alternating input and output from a stream without flush or positioning call (rule fully covered) | PRQA QA-C | | Include Page | | PRQA QA-C_v | PRQA QA-C_v5029 | Helix QAC | ||||||||||
| Include Page | Helix QAC_V | Helix QAC_V |
Related Vulnerabilities
Search for vulnerabilities resulting from the violation of this rule on the CERT website.
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Bibliography
| [ISO/IEC 9899:20112024] | 7.2123.5.3, "The fopen Function" |
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