Disable questionable code for handling isNullPointerConstant on value dependent

expression.

llvm-svn: 82217

clang/lib/AST/Expr.cpp

@@ -1627,8 +1627,8 @@ bool Expr::isIntegerConstantExpr(llvm::APSInt &Result, ASTContext &Ctx,
 /// cast to void*.
 bool Expr::isNullPointerConstant(ASTContext &Ctx) const {
   // Ignore value dependent expressions.
-  if (isValueDependent())
-    return true;
+  assert(!isValueDependent() && "Unexpect value dependent expression!");
+
   // Strip off a cast to void*, if it exists. Except in C++.
   if (const ExplicitCastExpr *CE = dyn_cast<ExplicitCastExpr>(this)) {
     if (!Ctx.getLangOptions().CPlusPlus) {

clang/test/SemaCXX/value-dependent-exprs.cpp

@@ -14,10 +14,13 @@ class C0 {
     int b[I];
   };
 
+  // FIXME: I'm unclear where the right place to handle this is.
+#if 0
   void f0(int *p) {
     if (p == I) {
     }
   }
+#endif
 
 #if 0
   // FIXME: Not sure whether we care about these.