Make warning suppressions MINGW-specific again. (#4515)

Background: https://github.com/pybind/pybind11/pull/4285#issuecomment-1435066554

Make warning suppressions MINGW-specific again. (#4515)
Background: https://github.com/pybind/pybind11/pull/4285#issuecomment-1435066554
9a1eeed0 · Ralf W. Grosse-Kunstleve · Henry Schreiner · c773a02a · 9a1eeed0 · 9a1eeed0
Commit 9a1eeed0 authored Feb 17, 2023 by Ralf W. Grosse-Kunstleve Committed by Henry Schreiner Feb 24, 2023
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include/pybind11/eigen/matrix.h
+2 -0

include/pybind11/eigen/tensor.h
+2 -0

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--- a/include/pybind11/eigen/matrix.h
+++ b/include/pybind11/eigen/matrix.h
@@ -19,7 +19,9 @@
 PYBIND11_WARNING_PUSH
 PYBIND11_WARNING_DISABLE_MSVC(5054) // https://github.com/pybind/pybind11/pull/3741
 //       C5054: operator '&': deprecated between enumerations of different types
+#if defined(__MINGW32__)
 PYBIND11_WARNING_DISABLE_GCC("-Wmaybe-uninitialized")
+#endif

 #include <Eigen/Core>
 #include <Eigen/SparseCore>

--- a/include/pybind11/eigen/tensor.h
+++ b/include/pybind11/eigen/tensor.h
@@ -17,7 +17,9 @@ static_assert(__GNUC__ > 5, "Eigen Tensor support in pybind11 requires GCC > 5.0
 PYBIND11_WARNING_PUSH
 PYBIND11_WARNING_DISABLE_MSVC(4554)
 PYBIND11_WARNING_DISABLE_MSVC(4127)
+#if defined(__MINGW32__)
 PYBIND11_WARNING_DISABLE_GCC("-Wmaybe-uninitialized")
+#endif

 #include <unsupported/Eigen/CXX11/Tensor>