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In this noncompliant example, the C standard library function strchr() is called through the function pointer fp declared with a prototype with incorrectly typed arguments. According to the C Standard, 6.3.2.3, paragraph 8 [ISO/IEC 9899:20112024]
A pointer to a function of one type may be converted to a pointer to a function of another type and back again; the result shall compare equal to the original pointer. If a converted pointer is used to call a function whose type is not compatible with the referenced the referenced type, the behavior is undefined.
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- Wrong argument values or references
Bibliography
| [CVE] | CVE-2006-1174 |
| [ISO/IEC 9899:2011] | 6.35.2.32, "Pointers"Function Calls" |
| [ISO/IEC 9899:2024] | 6.53.2.23, "Function CallsPointers" |
| [IEEE Std 1003.1:2013] | open() |
| [Spinellis 2006] | Section 2.6.1, "Incorrect Routine or Arguments" |
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