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-rw-r--r--Documentation/coding-style.rst4
1 files changed, 4 insertions, 0 deletions
diff --git a/Documentation/coding-style.rst b/Documentation/coding-style.rst
index 51afef27..065fbe0a 100644
--- a/Documentation/coding-style.rst
+++ b/Documentation/coding-style.rst
@@ -151,6 +151,10 @@ reference for the duration of the operation that borrows it.
never by reference. The caller can decide whether to transfer its ownership
of the std::shared_ptr<> with std::move() or retain it. The callee shall
use std::move() if it needs to store the shared pointer.
+ * Do not over-use std::move(), as it may prevent copy-elision. In particular
+ a function returning a std::shared_ptr<> value shall not use std::move() in
+ its return statements, and its callers shall not wrap the function call
+ with std::move().
* Borrowed references to shared objects are passed as references to the
objects themselves, not to the std::shared_ptr<>, with the same rules as
for single owner objects.