GorNishanov added inline comments.
================
Comment at: lib/CodeGen/CGCoroutine.cpp:225
+ void Emit(CodeGenFunction &CGF, Flags) override {
+ CGF.EmitStmt(Deallocate);
+ }
----------------
rnk wrote:
> GorNishanov wrote:
> > rnk wrote:
> > > This will be called twice: once for a normal exit and once for
> > > exceptional exit. In general, double emitting a `Stmt*` is not safe,
> > > since it might contain a VarDecl or a LabelDecl, but this usage is safe
> > > because `SubStmtBuilder::makeNewAndDeleteExpr()` builds two calls that
> > > can't declare anything. That is *definitely* worth a comment. :)
> > Thank you very much for the review!
> > Would switching the type of Deallocate from Stmt* to Expr* address this
> > concern?
> Not really, because gnu statement exprs mean Exprs can contain Decls as well.
> =(
Ahh. Okay, comment it is.
https://reviews.llvm.org/D31460
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