From: Richard Smith <richard-llvm@metafoo.co.uk>
Date: Sat, 29 Oct 2011 22:55:55 +0000 (+0000)
Subject: Don't crash if a GCC binary conditional is used in a constant expression on an
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=342f1f8b0a402c5a7f8c5055db7f60a7808f1687;p=clang

Don't crash if a GCC binary conditional is used in a constant expression on an
integer-cast pointer value.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@143299 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/AST/ExprConstant.cpp b/lib/AST/ExprConstant.cpp
index e5bff359f8..f33827ff7c 100644
--- a/lib/AST/ExprConstant.cpp
+++ b/lib/AST/ExprConstant.cpp
@@ -1436,6 +1436,10 @@ public:
   }
 
   bool Success(const CCValue &V, const Expr *E) {
+    if (V.isLValue()) {
+      Result = V;
+      return true;
+    }
     return Success(V.getInt(), E);
   }
   bool Error(const Expr *E) {
diff --git a/test/Sema/const-eval.c b/test/Sema/const-eval.c
index 6dcc6db765..ee55ca871f 100644
--- a/test/Sema/const-eval.c
+++ b/test/Sema/const-eval.c
@@ -88,3 +88,6 @@ void rdar8875946() {
 }
 
 double d = (d = 0.0); // expected-error {{not a compile-time constant}}
+
+int n = 2;
+int intLvalue[*(int*)((long)&n ?: 1)] = { 1, 2 }; // expected-error {{variable length array}}