https://llvm.org/bugs/show_bug.cgi?id=23819
Bug ID: 23819
Summary: -Wpessimizing-move sometimes issued where
-Wredundant-move would be appropriate
Product: clang
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: C++11
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected], [email protected]
Classification: Unclassified
Case 1: "moving a temporary object prevents copy elision" diagnosed even though
no copy would be made anyway:
struct X {};
X g();
void h(X&&);
void f() { h(std::move(g())); }
Case 2: "moving a local object in a return statement prevents copy elision"
issued even though copy elision is not possible, because we're returning a
function parameter:
X f(X x) { return std::move(x); }
In both of these cases we should issue a -Wredundant-move warning instead.
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