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Date:      Sat, 31 Jan 2026 18:20:25 +0000
From:      Dimitry Andric <dim@FreeBSD.org>
To:        ports-committers@FreeBSD.org, dev-commits-ports-all@FreeBSD.org, dev-commits-ports-branches@FreeBSD.org
Subject:   git: 5939621f4208 - 2026Q1 - math/vtk9: fix build with libc++ 21
Message-ID:  <697e47e9.24296.7b0b416@gitrepo.freebsd.org>

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The branch 2026Q1 has been updated by dim:

URL: https://cgit.FreeBSD.org/ports/commit/?id=5939621f420876a9a42754970f89c418d8152de3

commit 5939621f420876a9a42754970f89c418d8152de3
Author:     Dimitry Andric <dim@FreeBSD.org>
AuthorDate: 2026-01-19 19:58:42 +0000
Commit:     Dimitry Andric <dim@FreeBSD.org>
CommitDate: 2026-01-31 18:20:15 +0000

    math/vtk9: fix build with libc++ 21
    
    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.
    
    PR:             292590
    Approved by:    yuri (maintainer)
    MFH:            2026Q1
    
    (cherry picked from commit 1fe6f247796702372b50b08c464536586f8468c7)
---
 math/vtk9/files/patch-ThirdParty_fmt_vtkfmt_vtkfmt_format.h | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/math/vtk9/files/patch-ThirdParty_fmt_vtkfmt_vtkfmt_format.h b/math/vtk9/files/patch-ThirdParty_fmt_vtkfmt_vtkfmt_format.h
new file mode 100644
index 000000000000..5ae8d9addfdf
--- /dev/null
+++ b/math/vtk9/files/patch-ThirdParty_fmt_vtkfmt_vtkfmt_format.h
@@ -0,0 +1,10 @@
+--- ThirdParty/fmt/vtkfmt/vtkfmt/format.h.orig	2025-09-17 20:02:27 UTC
++++ ThirdParty/fmt/vtkfmt/vtkfmt/format.h
+@@ -44,6 +44,7 @@
+ #  include <cmath>    // std::signbit
+ #  include <cstddef>  // std::byte
+ #  include <cstdint>  // uint32_t
++#  include <cstdlib>  // malloc/free
+ #  include <cstring>  // std::memcpy
+ #  include <limits>   // std::numeric_limits
+ #  include <new>      // std::bad_alloc


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