[Bug 292590] math/vtk9: fix build with libc++ 21
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Date: Mon, 19 Jan 2026 19:58:09 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=292590
Bug ID: 292590
Summary: math/vtk9: fix build with libc++ 21
Product: Ports & Packages
Version: Latest
Hardware: Any
OS: Any
Status: New
Severity: Affects Some People
Priority: ---
Component: Individual Port(s)
Assignee: yuri@freebsd.org
Reporter: dim@FreeBSD.org
Assignee: yuri@freebsd.org
Flags: maintainer-feedback?(yuri@freebsd.org)
With libc++ 21, math/vtk9 fails to compile, resulting in errors similar
to:
In file included from
/wrkdirs/usr/ports/math/vtk9/work/VTK-9.5.2/ThirdParty/fmt/vtkfmt/src/os.cc:14:
In file included from
/wrkdirs/usr/ports/math/vtk9/work/VTK-9.5.2/ThirdParty/fmt/vtkfmt/vtkfmt/os.h:11:
/wrkdirs/usr/ports/math/vtk9/work/VTK-9.5.2/ThirdParty/fmt/vtkfmt/vtkfmt/format.h:747:28:
error: use of undeclared identifier 'malloc'
747 | T* p = static_cast<T*>(malloc(n * sizeof(T)));
| ^~~~~~
/wrkdirs/usr/ports/math/vtk9/work/VTK-9.5.2/ThirdParty/fmt/vtkfmt/vtkfmt/format.h:752:35:
error: use of undeclared identifier 'free'
752 | void deallocate(T* p, size_t) { free(p); }
| ^~~~
This is because malloc and free are defined in <cstdlib>, which is not
included in vtk's format.h. Add the include to fix the build.
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