[cfe-commits] r94094 - in /cfe/trunk: lib/Sema/SemaChecking.cpp test/Sema/warn-unreachable.c

[Mike Stump]

Author: mrs
Date: Thu Jan 21 13:51:34 2010
New Revision: 94094

URL: http://llvm.org/viewvc/llvm-project?rev=94094&view=rev
Log:
Improve unreachable code warnings for with respect to c-style casts.

Modified:
    cfe/trunk/lib/Sema/SemaChecking.cpp
    cfe/trunk/test/Sema/warn-unreachable.c

Modified: cfe/trunk/lib/Sema/SemaChecking.cpp
URL: 
http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Sema/SemaChecking.cpp?rev=94094&r1=94093&r2=94094&view=diff

==============================================================================
--- cfe/trunk/lib/Sema/SemaChecking.cpp (original)
+++ cfe/trunk/lib/Sema/SemaChecking.cpp Thu Jan 21 13:51:34 2010
@@ -2116,6 +2116,11 @@
     const ConditionalOperator *CO = cast<ConditionalOperator>(S);
     return CO->getQuestionLoc();
   }
+  case Expr::CStyleCastExprClass: {
+    const CStyleCastExpr *CSC = cast<CStyleCastExpr>(S);
+    R1 = CSC->getSubExpr()->getSourceRange();
+    return CSC->getLParenLoc();
+  }
   case Expr::ImplicitCastExprClass:
     ++sn;
     goto top;

Modified: cfe/trunk/test/Sema/warn-unreachable.c
URL: 
http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Sema/warn-unreachable.c?rev=94094&r1=94093&r2=94094&view=diff

==============================================================================
--- cfe/trunk/test/Sema/warn-unreachable.c (original)
+++ cfe/trunk/test/Sema/warn-unreachable.c Thu Jan 21 13:51:34 2010
@@ -87,5 +87,8 @@
     halt()
       ?         // expected-warning {{will never be executed}}
       dead() : dead();
+  case 10:
+    (           // expected-warning {{will never be executed}}
+      float)halt();
   }
 }


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