[XALANC-775] Xalan is incompatible with C++17 - ASF JIRA

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Details

Type: Bug
Status: Open
Priority: Major
Resolution: Unresolved
Affects Version/s: 1.11
Fix Version/s: None
Component/s: XalanC
Labels:
None

Description

In C++ 17, the template classes std::unary_function and std::binary_function have been removed. Since Xalan derives multiple classes from these classes, using it with the flag -std=c++17 fails.

This does not just affect compilation of Xalan itself, but any project that includes Xalan's header files, as including those files causes errors about the nonexisting symbol std::unary_function.

I'm currently working on a project that uses Xalan, and this issue is stopping us from moving our codebase to C++17.