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MSC37-C-EX1: According to the C Standard, 5.1.2.23.34, paragraph 1 [ISO/IEC 9899:20112024], "Reaching the } that terminates the main function returns a value of 0." As a result, it is permissible for control to reach the end of the main() function without executing a return statement.
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Search for vulnerabilities resulting from the violation of this rule on the CERT website.
Automated Detection
| Tool | Version | Checker | Description | |||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Astrée |
| return-implicit | Fully checked | |||||||||||||||||
| Axivion Bauhaus Suite |
| CertC-MSC37 | ||||||||||||||||||
| CodeSonar |
| LANG.STRUCT.MRS | Missing return statement | |||||||||||||||||
| Coverity |
| MISSING_RETURN | Implemented | |||||||||||||||||
| Cppcheck |
| missingReturn | Fully implemented | |||||||||||||||||
| Cppcheck Premium |
| missingReturn | Fully implemented | |||||||||||||||||
| Helix QAC |
| C++4022 DF2888 | ||||||||||||||||||
| Klocwork |
| FUNCRET.GEN | MISRA.RETURN.NOT_LASTFUNCRET.IMPLICIT | |||||||||||||||||
| LDRA tool suite |
| 2 D, 36 S, 66 S | Fully implemented | |||||||||||||||||
| Parasoft C/C++test |
| CERT_C-MSC37-a | All exit paths from a function, except main(), with non-void return type shall have an explicit return statement with an expression | |||||||||||||||||
| PC-lint Plus |
| 533 | Fully supported | |||||||||||||||||
| Polyspace Bug Finder |
| CERT C: Rule MSC37-C | includeChecks for missing return statement (rule fully covered) | PRQA QA-C | ||||||||||||||||
| Include Page | PRQA QA-C_v | PRQA QA-C_v | 2888 | PRQA QA-C++ | cplusplus:PRQA QA-C++_V | cplusplus:PRQA QA-C++_V | 2888, 4022 | |||||||||||||
| RuleChecker |
| return-implicit | Fully checked | |||||||||||||||||
| SonarQube C/C++ Plugin |
| S935 | ||||||||||||||||||
| TrustInSoft Analyzer |
| Body of function falls-through | Exhaustively verified. | Helix QAC | ||||||||||||||||
| Include Page | Helix QAC_V | Helix QAC_V |
Related Guidelines
Key here (explains table format and definitions)
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Bibliography
| [ISO/IEC 9899:20112024] | 5.1.2.23.34, "Program Termination" |
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