False positive: freopen

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False positive: freopen

Forum: General Discussion

Creator: Gwyn Ciesla

Created: 2025-10-01

Updated: 2025-10-02

Gwyn Ciesla - 2025-10-01

From: https://bugzilla.redhat.com/show_bug.cgi?id=2400880

filter.c:71:7: error: Return value of allocation function 'freopen' is not
stored. [leakReturnValNotUsed]
if (freopen(NULL, "w+b", imf) == NULL) die( errno, LOC );

Since freopen() returns either imf or NULL, cppcheck should accept this line of
code. This error report is probably the result of some general logic from which
freopen() should be exempted.

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CHR - 2025-10-02

Thanks for reporting, ticket is here: https://trac.cppcheck.net/ticket/14171

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Gwyn Ciesla - 2025-10-02

Thank you!

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