[stdlib] Fix an unused function warning on Linux

rintaro · rintaro · commit 8408e12540ef · 2016-03-05T10:23:14.000+09:00
diff --git a/stdlib/public/runtime/HeapObject.cpp b/stdlib/public/runtime/HeapObject.cpp
@@ -559,7 +559,7 @@ extern "C" void swift_deallocPartialClassInstance(HeapObject *object,
   swift_deallocClassInstance(object, allocatedSize, allocatedAlignMask);
 }
 
-#if !defined(__APPLE__)
+#if !defined(__APPLE__) && defined(SWIFT_RUNTIME_CLOBBER_FREED_OBJECTS)
 static inline void memset_pattern8(void *b, const void *pattern8, size_t len) {
   char *ptr = static_cast<char *>(b);
   while (len >= 8) {

Original file line number	Diff line number	Diff line change
`@@ -559,7 +559,7 @@ extern "C" void swift_deallocPartialClassInstance(HeapObject *object,`
`559`	`559`	`swift_deallocClassInstance(object, allocatedSize, allocatedAlignMask);`
`560`	`560`	`}`
`561`	`561`
`562`		`-#if !defined(__APPLE__)`
	`562`	`+#if !defined(__APPLE__) && defined(SWIFT_RUNTIME_CLOBBER_FREED_OBJECTS)`
`563`	`563`	`static inline void memset_pattern8(void b, const void pattern8, size_t len) {`
`564`	`564`	`char ptr = static_cast<char >(b);`
`565`	`565`	`while (len >= 8) {`