Don't warn about address-to-member used as part of initialisation, if

the member expression is in parentheses.

llvm-svn: 158651

clang/lib/Sema/SemaDecl.cpp

@@ -6232,7 +6232,7 @@ namespace {
     void VisitUnaryOperator(UnaryOperator *E) {
       // For POD record types, addresses of its own members are well-defined.
       if (E->getOpcode() == UO_AddrOf && isRecordType && isPODType &&
-          isa<MemberExpr>(E->getSubExpr())) return;
+          isa<MemberExpr>(E->getSubExpr()->IgnoreParens())) return;
       Inherited::VisitUnaryOperator(E);
     } 
 

clang/test/Sema/uninit-variables.c

@@ -438,6 +438,10 @@ void test54() {
   ASSIGN(int, c, d);  // expected-warning {{variable 'c' is uninitialized when used here}}
 }
 
+// Taking the address is fine
+struct { struct { void *p; } a; } test55 = { { &test55.a }}; // no-warning
+struct { struct { void *p; } a; } test56 = { { &(test56.a) }}; // no-warning
+
 void uninit_in_loop() {
   int produce(void);
   void consume(int);