From: Chandler Carruth <chandlerc@gmail.com>
Date: Tue, 29 Jun 2010 00:23:11 +0000 (+0000)
Subject: Prefer llvm_unreachable(...) to assert(false && ...). This is important as
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=0010bca8afaed0236c4910640f6bc1bcf1984125;p=clang

Prefer llvm_unreachable(...) to assert(false && ...). This is important as
without it we might exit a non-void function without returning.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@107106 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/AST/ExprClassification.cpp b/lib/AST/ExprClassification.cpp
index 608706bdb0..4629500848 100644
--- a/lib/AST/ExprClassification.cpp
+++ b/lib/AST/ExprClassification.cpp
@@ -11,6 +11,7 @@
 //
 //===----------------------------------------------------------------------===//
 
+#include "llvm/Support/ErrorHandling.h"
 #include "clang/AST/Expr.h"
 #include "clang/AST/ExprCXX.h"
 #include "clang/AST/ExprObjC.h"
@@ -432,7 +433,7 @@ Expr::isLvalueResult Expr::isLvalue(ASTContext &Ctx) const {
   case Cl::CL_ClassTemporary: return LV_ClassTemporary;
   case Cl::CL_PRValue: return LV_InvalidExpression;
   }
-  assert(false && "Unhandled kind");
+  llvm_unreachable("Unhandled kind");
 }
 
 Expr::isModifiableLvalueResult
@@ -454,17 +455,17 @@ Expr::isModifiableLvalue(ASTContext &Ctx, SourceLocation *Loc) const {
   }
   assert(VC.getKind() == Cl::CL_LValue && "Unhandled kind");
   switch (VC.getModifiable()) {
-  case Cl::CM_Untested: assert(false && "Did not test modifiability");
+  case Cl::CM_Untested: llvm_unreachable("Did not test modifiability");
   case Cl::CM_Modifiable: return MLV_Valid;
-  case Cl::CM_RValue: assert(false && "CM_RValue and CL_LValue don't match");
+  case Cl::CM_RValue: llvm_unreachable("CM_RValue and CL_LValue don't match");
   case Cl::CM_Function: return MLV_NotObjectType;
   case Cl::CM_LValueCast:
-    assert(false && "CM_LValueCast and CL_LValue don't match");
+    llvm_unreachable("CM_LValueCast and CL_LValue don't match");
   case Cl::CM_NotBlockQualified: return MLV_NotBlockQualified;
   case Cl::CM_NoSetterProperty: return MLV_NoSetterProperty;
   case Cl::CM_ConstQualified: return MLV_ConstQualified;
   case Cl::CM_ArrayType: return MLV_ArrayType;
   case Cl::CM_IncompleteType: return MLV_IncompleteType;
   }
-  assert(false && "Unhandled modifiable type");
+  llvm_unreachable("Unhandled modifiable type");
 }