From: Douglas Gregor <dgregor@apple.com>
Date: Mon, 25 Oct 2010 20:48:33 +0000 (+0000)
Subject: Look through the address-of operator to find the function being
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=d8f0ade43ee3f9d13d2d98b7a3d07468c2b4096e;p=clang

Look through the address-of operator to find the function being
called. Fixes another aspect of PR8314.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@117308 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Sema/SemaExpr.cpp b/lib/Sema/SemaExpr.cpp
index 793dc42759..e329ada932 100644
--- a/lib/Sema/SemaExpr.cpp
+++ b/lib/Sema/SemaExpr.cpp
@@ -3769,6 +3769,10 @@ Sema::ActOnCallExpr(Scope *S, Expr *Fn, SourceLocation LParenLoc,
   }
 
   NamedDecl *NDecl = 0;
+  if (UnaryOperator *UnOp = dyn_cast<UnaryOperator>(NakedFn))
+    if (UnOp->getOpcode() == UO_AddrOf)
+      NakedFn = UnOp->getSubExpr()->IgnoreParens();
+  
   if (isa<DeclRefExpr>(NakedFn))
     NDecl = cast<DeclRefExpr>(NakedFn)->getDecl();
 
diff --git a/test/Sema/knr-def-call.c b/test/Sema/knr-def-call.c
index fc6cfbbd56..b23beb5711 100644
--- a/test/Sema/knr-def-call.c
+++ b/test/Sema/knr-def-call.c
@@ -37,4 +37,5 @@ void proto(x)
 
 void use_proto() {
   proto(42.0); // expected-warning{{implicit conversion turns floating-point number into integer: 'double' to 'int'}}
+  (&proto)(42.0); // expected-warning{{implicit conversion turns floating-point number into integer: 'double' to 'int'}}
 }