Suppress unsafe CRT function warnings in test_sharding.h

Author: alexreinking

test/common/test_sharding.h

@@ -1,6 +1,11 @@
 #ifndef TEST_SHARDING_H
 #define TEST_SHARDING_H
 
+#ifdef _MSC_VER
+#pragma warning(push)
+#pragma warning(disable : 4996)
+#endif
+
 // This file may be used by AOT tests, so it deliberately does not
 // include Halide.h
 
@@ -86,4 +91,8 @@ class Sharder {
 }  // namespace Internal
 }  // namespace Halide
 
+#ifdef _MSC_VER
+#pragma warning(pop)
+#endif
+
 #endif  // TEST_SHARDING_H