[PATCH] D13973: CFG: Delay creating Dtors for CompoundStmts which end in ReturnStmt

Manuel Klimek via cfe-commits cfe-commits at lists.llvm.org
Sun Nov 1 10:21:33 PST 2015

klimek added inline comments.

Comment at: lib/Analysis/CFG.cpp:1949-1952
@@ +1948,6 @@
+  }
+  if(!C->body_empty() && !dyn_cast<ReturnStmt>(*C->body_rbegin())) {
+    // If the body ends with a ReturnStmt, the dtors will be added in VisitReturnStmt
+    addAutomaticObjDtors(ScopePos, scopeBeginPos, C);
+  }
klimek wrote:
> majnemer wrote:
> > mgehre wrote:
> > > klimek wrote:
> > > > If the body is non-empty, but the return is not the last statement, won't that still call addAutomaticObjDtors twice?
> > > Yes, if there are statements after a "return" (i.e. dead code), it will still call addAutomaticObjDtors  twice, just like before this patch.
> > > I guess that this case is not to common, and would be flagged by other checks.
> > Please don't use `dyn_cast` if you just need to perform a type test, use `isa` instead.
> > You need a space between `if` and `(`.
> Is there a reason to not fix that while we're here (seems like a related issue into which somebody might run down the road otherwise?)
I'd still be curious about an answer to my question :)


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