https://bugs.llvm.org/show_bug.cgi?id=50438
Bug ID: 50438
Summary: Warn when assigning to temporary
Product: clang
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: enhancement
Priority: P
Component: C++
Assignee: unassignedclangb...@nondot.org
Reporter: davidfromonl...@gmail.com
CC: blitzrak...@gmail.com, dgre...@apple.com,
erik.pilking...@gmail.com, llvm-bugs@lists.llvm.org,
richard-l...@metafoo.co.uk
I would like for there to be a warning that warns for the following code:
```
struct s {};
inline void f() {
s() = s();
}
```
I know that for a given type, I can prevent this from compiling if I give `s`
an lvalue-refererence-qualified assignment operator, but that requires writing
two assignment operators and two (sometimes three) constructors to get the
behavior I get today from not typing anything, and I have to apply it to every
type. It would be much nicer if I could just turn on a warning for this.
I don't know where this warning would belong in terms of `Wall` `Wextra` or
just `Weverything`. The only valid use case is if your assignment operator has
a side effect that you want.
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