-Wuninitialized: warn about uninitialized values resulting from ?: that evaluate to lvalues (in C++).
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@172875 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Analysis/UninitializedValues.cpp b/lib/Analysis/UninitializedValues.cpp
index fbd49de..0eb96dc 100644
--- a/lib/Analysis/UninitializedValues.cpp
+++ b/lib/Analysis/UninitializedValues.cpp
@@ -358,6 +358,16 @@
}
void ClassifyRefs::classify(const Expr *E, Class C) {
+ // The result of a ?: could also be an lvalue.
+ E = E->IgnoreParens();
+ if (const ConditionalOperator *CO = dyn_cast<ConditionalOperator>(E)) {
+ const Expr *TrueExpr = CO->getTrueExpr();
+ if (!isa<OpaqueValueExpr>(TrueExpr))
+ classify(TrueExpr, C);
+ classify(CO->getFalseExpr(), C);
+ return;
+ }
+
FindVarResult Var = findVar(E, DC);
if (const DeclRefExpr *DRE = Var.getDeclRefExpr())
Classification[DRE] = std::max(Classification[DRE], C);