From 61f29448ae11f19c934af9781b664ee82edb7938 Mon Sep 17 00:00:00 2001
From: Chris <cbartak@gmail.com>
Date: Sun, 29 Oct 2017 18:27:27 -0500
Subject: [PATCH] BLD: alias warning in float hashtabl

---
 pandas/_libs/src/klib/khash_python.h | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/pandas/_libs/src/klib/khash_python.h b/pandas/_libs/src/klib/khash_python.h
index a375a73b04c9e..dd75ae5ec7e28 100644
--- a/pandas/_libs/src/klib/khash_python.h
+++ b/pandas/_libs/src/klib/khash_python.h
@@ -1,3 +1,4 @@
+#include <string.h>
 #include <Python.h>
 
 #include "khash.h"
@@ -14,7 +15,9 @@
 // hash for 64 bit integers.
 // GH 13436
 khint64_t PANDAS_INLINE asint64(double key) {
-  return *(khint64_t *)(&key);
+  khint64_t val;
+  memcpy(&val, &key, sizeof(double));
+  return val;
 }
 #define kh_float64_hash_func(key) (khint32_t)((asint64(key))>>33^(asint64(key))^(asint64(key))<<11)
 #define kh_float64_hash_equal(a, b) ((a) == (b) || ((b) != (b) && (a) != (a)))