Suppress gcc 4.8.5 (CentOS 7) warning.

rwgk · rwgk · commit 88cec1152ab5 · 2023-10-09T07:00:47.000-07:00
```
include/pybind11/eigen/../numpy.h:63:53: error: dereferencing type-punned pointer will break strict-aliasing rules [-Werror=strict-aliasing]
         return *reinterpret_cast&lt;T *&gt;(value_storage_);
                                                     ^
```
diff --git a/include/pybind11/numpy.h b/include/pybind11/numpy.h
@@ -59,7 +59,13 @@ class LazyInitializeAtLeastOnceDestroyNever {
                 initialized_ = true;
             }
         }
+        PYBIND11_WARNING_PUSH
+#if !defined(__clang__) && defined(__GNUC__) && __GNUC__ < 5
+        // Needed for gcc 4.8.5
+        PYBIND11_WARNING_DISABLE_CLANG("-Wstrict-aliasing")
+#endif
         return *reinterpret_cast<T *>(value_storage_);
+        PYBIND11_WARNING_POP
     }
 
 private:

Original file line number	Diff line number	Diff line change
`@@ -59,7 +59,13 @@ class LazyInitializeAtLeastOnceDestroyNever {`
`59`	`59`	`initialized_ = true;`
`60`	`60`	`}`
`61`	`61`	`}`
	`62`	`+ PYBIND11_WARNING_PUSH`
	`63`	`+#if !defined(__clang__) && defined(__GNUC__) && __GNUC__ < 5`
	`64`	`+ // Needed for gcc 4.8.5`
	`65`	`+ PYBIND11_WARNING_DISABLE_CLANG("-Wstrict-aliasing")`
	`66`	`+#endif`
`62`	`67`	`return reinterpret_cast<T >(value_storage_);`
	`68`	`+ PYBIND11_WARNING_POP`
`63`	`69`	`}`
`64`	`70`
`65`	`71`	`private:`