Xcode 26 clang doesn't support sized deallocation

Question

The clang compiler shipping with Xcode 26 does not support sized deallocation:

void* p = operator new(100);
// [...]
operator delete(p, 100); // error: no matching function for call to 'operator delete'

The previous version Xcode 16 did support this.

Tobi · Accepted Answer · 2025-07-08 10:17:34Z

2

The clang shipping with Xcode 26 needs an extra compiler flag for this: -fsized-deallocation. Adding this to Other C++ flags solves the issue.

edited Jul 8 at 10:17

answered Jul 8 at 8:10

Tobi

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