fix g++ 4.9 strict alias warning

Huang-Ming Huang · Huang-Ming Huang · commit c236ea0730a4 · 2016-09-28T15:17:01.000-05:00
diff --git a/src/mfast/coder/encoder/fast_encoder.cpp b/src/mfast/coder/encoder/fast_encoder.cpp
@@ -50,7 +50,9 @@ struct fast_encoder_impl : simple_template_repo_t {
   }
 
   void visit(enum_cref cref) {
-    this->visit(reinterpret_cast<uint64_cref &>(cref));
+    uint64_cref tmp;
+    std::memcpy(&tmp, &cref, sizeof(cref));
+    this->visit(tmp);
   }
 
   template <typename SimpleCRef> void visit(SimpleCRef cref);

Original file line number	Diff line number	Diff line change
`@@ -50,7 +50,9 @@ struct fast_encoder_impl : simple_template_repo_t {`
`50`	`50`	`}`
`51`	`51`
`52`	`52`	`void visit(enum_cref cref) {`
`53`		`- this->visit(reinterpret_cast<uint64_cref &>(cref));`
	`53`	`+ uint64_cref tmp;`
	`54`	`+ std::memcpy(&tmp, &cref, sizeof(cref));`
	`55`	`+ this->visit(tmp);`
`54`	`56`	`}`
`55`	`57`
`56`	`58`	`template <typename SimpleCRef> void visit(SimpleCRef cref);`