https://issues.dlang.org/show_bug.cgi?id=19993
Issue ID: 19993
Summary: Reference to delegate after return statement causes
unnecessary closure allocation
Product: D
Version: D2
Hardware: x86_64
OS: Linux
Status: NEW
Severity: normal
Priority: P1
Component: dmd
Assignee: [email protected]
Reporter: [email protected]
auto call(alias dg)() {
return dg();
pragma(msg, typeof(dg));
}
@nogc void main() {
int acc = 0;
call!(() => acc += 1);
}
---
The program above fails to compile with the following error:
Error: function `D main` is @nogc yet allocates closures with the GC
However, if the pragma(msg) is moved before the return statement in `call`,
there is no error.
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