The address of a variable is only constant if the variable has global storage.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59939 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/AST/ExprConstant.cpp b/lib/AST/ExprConstant.cpp
index 7b927f4..6cdbc80 100644
--- a/lib/AST/ExprConstant.cpp
+++ b/lib/AST/ExprConstant.cpp
@@ -121,7 +121,7 @@
}
APValue VisitParenExpr(ParenExpr *E) { return Visit(E->getSubExpr()); }
- APValue VisitDeclRefExpr(DeclRefExpr *E) { return APValue(E, 0); }
+ APValue VisitDeclRefExpr(DeclRefExpr *E);
APValue VisitPredefinedExpr(PredefinedExpr *E) { return APValue(E, 0); }
APValue VisitCompoundLiteralExpr(CompoundLiteralExpr *E);
APValue VisitMemberExpr(MemberExpr *E);
@@ -135,6 +135,14 @@
return Result.isLValue();
}
+APValue LValueExprEvaluator::VisitDeclRefExpr(DeclRefExpr *E)
+{
+ if (!E->hasGlobalStorage())
+ return APValue();
+
+ return APValue(E, 0);
+}
+
APValue LValueExprEvaluator::VisitCompoundLiteralExpr(CompoundLiteralExpr *E) {
if (E->isFileScope())
return APValue(E, 0);
diff --git a/test/Sema/const-eval.c b/test/Sema/const-eval.c
index 67c27d4..e3d63ca 100644
--- a/test/Sema/const-eval.c
+++ b/test/Sema/const-eval.c
@@ -20,3 +20,9 @@
unsigned int l_19 = 1;
EVAL_EXPR(14, (1 ^ l_19) && 1); // expected-error {{fields must have a constant size}}
+
+void f()
+{
+ int a;
+ EVAL_EXPR(15, (_Bool)&a); // expected-error {{fields must have a constant size}}
+}