[cfe-commits] r115979 - in /cfe/trunk: lib/Sema/SemaExpr.cpp test/Sema/cast-to-union.c

[Abramo Bagnara]

Author: abramo
Date: Thu Oct  7 16:20:44 2010
New Revision: 115979

URL: http://llvm.org/viewvc/llvm-project?rev=115979&view=rev
Log:
Fixed cast to union with anonymous bitfields.

Modified:
    cfe/trunk/lib/Sema/SemaExpr.cpp
    cfe/trunk/test/Sema/cast-to-union.c

Modified: cfe/trunk/lib/Sema/SemaExpr.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Sema/SemaExpr.cpp?rev=115979&r1=115978&r2=115979&view=diff
==============================================================================
--- cfe/trunk/lib/Sema/SemaExpr.cpp (original)
+++ cfe/trunk/lib/Sema/SemaExpr.cpp Thu Oct  7 16:20:44 2010
@@ -3986,7 +3986,8 @@
       for (Field = RD->field_begin(), FieldEnd = RD->field_end();
            Field != FieldEnd; ++Field) {
         if (Context.hasSameUnqualifiedType(Field->getType(),
-                                           castExpr->getType())) {
+                                           castExpr->getType()) &&
+            !Field->isUnnamedBitfield()) {
           Diag(TyR.getBegin(), diag::ext_typecheck_cast_to_union)
             << castExpr->getSourceRange();
           break;

Modified: cfe/trunk/test/Sema/cast-to-union.c
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Sema/cast-to-union.c?rev=115979&r1=115978&r2=115979&view=diff
==============================================================================
--- cfe/trunk/test/Sema/cast-to-union.c (original)
+++ cfe/trunk/test/Sema/cast-to-union.c Thu Oct  7 16:20:44 2010
@@ -1,11 +1,12 @@
 // RUN: %clang_cc1 -fsyntax-only -verify -pedantic %s
 
-union u { int i; };
+union u { int i; unsigned : 3; };
 void f(union u);
 
 void test(int x) {
   f((union u)x); // expected-warning {{C99 forbids casts to union type}}
   f((union u)&x); // expected-error {{cast to union type from type 'int *' not present in union}}
+  f((union u)2U); // expected-error {{cast to union type from type 'unsigned int' not present in union}}
 }
 
 union u w = (union u)2; // expected-warning {{C99 forbids casts to union type}}