Make warning suppressions MINGW-specific again.

rwgk · rwgk · commit c27e691584ed · 2023-02-17T10:49:49.000-08:00
Background: pybind#4285 (comment)
diff --git 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>
diff --git 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>
 
