Using the value of a pointer to a FILE object after the associated file is closed is undefined behavior. (See undefined behavior 148153.) Programs that close the standard streams (especially stdout but also stderr and stdin) must be careful not to use these streams in subsequent function calls, particularly those that implicitly operate on them (such as printf(), perror(), and getc()).
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Tool | Version | Checker | Description | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Astrée |
| Supported | |||||||||||
| CodeSonar |
| IO.UAC | Use after close | ||||||||||
| Compass/ROSE | |||||||||||||
| Coverity |
| USE_AFTER_FREE | Implemented | ||||||||||
| Helix QAC |
| DF2696, DF2697, DF2698 | |||||||||||
| Klocwork |
| SV.INCORRECT_RESOURCE_HANDLING.URH | |||||||||||
| LDRA tool suite |
| 48 D | Partially implemented | ||||||||||
| Parasoft C/C++test |
| BD-RES-FREE | CERT_C-FIO46-a | Do not use resources that have been freed | |||||||||
| PC-lint Plus |
| 2471 | Fully supported | Implemented||||||||||
| Polyspace Bug Finder | R2016a |
| Checks for use of previously closed resource (rule partially covered) Function closes a previously closed stream Argument to a standard function does not meet requirements for use in the function Function operates on a previously closed stream | ||||||||||
| SonarQube C/C++ Plugin |
| S3588 |
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| [IEEE Std 1003.1:2013] | XSH, System Interfaces, open |
| [ISO/IEC 9899:20112024] | Subclause 7.2123.3, "Files" |
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