From: Eli Friedman <eli.friedman@gmail.com>
Date: Mon, 9 Nov 2009 04:20:47 +0000 (+0000)
Subject: Explicitly note that pre-inc/dec lvalues are not supported yet, so that it
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=e401cd5a487feee1165d3977aa3f4b68f44a3ca7;p=clang

Explicitly note that pre-inc/dec lvalues are not supported yet, so that it
doesn't crash.  (Such expressions are valid in C++, but not in C.)



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@86513 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/CodeGen/CGExpr.cpp b/lib/CodeGen/CGExpr.cpp
index 15cb72e9fb..63041fee82 100644
--- a/lib/CodeGen/CGExpr.cpp
+++ b/lib/CodeGen/CGExpr.cpp
@@ -919,13 +919,17 @@ LValue CodeGenFunction::EmitUnaryOpLValue(const UnaryOperator *E) {
     return LV;
   }
   case UnaryOperator::Real:
-  case UnaryOperator::Imag:
+  case UnaryOperator::Imag: {
     LValue LV = EmitLValue(E->getSubExpr());
     unsigned Idx = E->getOpcode() == UnaryOperator::Imag;
     return LValue::MakeAddr(Builder.CreateStructGEP(LV.getAddress(),
                                                     Idx, "idx"),
                             MakeQualifiers(ExprTy));
   }
+  case UnaryOperator::PreInc:
+  case UnaryOperator::PreDec:
+    return EmitUnsupportedLValue(E, "pre-inc/dec expression");
+  }
 }
 
 LValue CodeGenFunction::EmitStringLiteralLValue(const StringLiteral *E) {