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Fixed cast to union with anonymous bitfields. 

llvm-svn: 115979
This commit is contained in:
Abramo Bagnara 2010-10-07 21:20:44 +00:00
parent ae8d67d3bb
commit 5d3e724fc5
2 changed files with 4 additions and 2 deletions
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3
clang/lib/Sema/SemaExpr.cpp
View File

@ -3986,7 +3986,8 @@ bool Sema::CheckCastTypes(SourceRange TyR, QualType castType, Expr *&castExpr,
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;

3
clang/test/Sema/cast-to-union.c
View File

@ -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}}