Disable symbol mangling for C++

include/malloc.h

@@ -6,6 +6,10 @@
 // Generated from:
 // `grep "malloc\|calloc\|realloc\|free\|valloc\|memalign" target/include/stdlib.h`
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 void *calloc(size_t nelem, size_t elsize);
 void free(void *ptr);
 void *malloc(size_t size);
@@ -13,4 +17,8 @@ void *memalign(size_t alignment, size_t size);
 void *realloc(void *ptr, size_t size);
 void *valloc(size_t size);
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif