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patch to ir-gen conversion function call used in 

initializing a reference class.

llvm-svn: 82664
This commit is contained in:
Fariborz Jahanian 2009-09-23 22:34:00 +00:00
parent e412a5a8f7
commit 9ce90d13e3
2 changed files with 40 additions and 4 deletions
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13
clang/lib/Sema/SemaDeclCXX.cpp
View File

@ -3527,10 +3527,15 @@ Sema::CheckReferenceInit(Expr *&Init, QualType DeclType,
"Expected a direct reference binding!");
return false;
} else {
// Perform the conversion.
// FIXME: Binding to a subobject of the lvalue is going to require more
// AST annotation than this.
ImpCastExprToType(Init, T1, CastExpr::CK_Unknown, /*isLvalue=*/true);
OwningExprResult InitConversion =
BuildCXXCastArgument(Init->getLocStart(), QualType(),
CastExpr::CK_UserDefinedConversion,
cast<CXXMethodDecl>(Best->Function),
Owned(Init));
Init = InitConversion.takeAs<Expr>();
ImpCastExprToType(Init, T1, CastExpr::CK_UserDefinedConversion,
/*isLvalue=*/true);
}
break;

31
clang/test/CodeGenCXX/decl-ref-init.cpp Normal file
View File

@ -0,0 +1,31 @@
// RUN: clang-cc -triple x86_64-apple-darwin -S %s -o %t-64.s &&
// RUN: FileCheck -check-prefix LP64 --input-file=%t-64.s %s &&
// RUN: clang-cc -triple i386-apple-darwin -S %s -o %t-32.s &&
// RUN: FileCheck -check-prefix LP32 --input-file=%t-32.s %s &&
// RUN: true
struct A {};
struct B
{
operator A&();
};
struct D : public B {
operator A();
};
extern B f();
extern D d();
int main() {
const A& rca = f();
const A& rca2 = d();
}
// CHECK-LP64: call __ZN1BcvR1AEv
// CHECK-LP64: call __ZN1BcvR1AEv
// CHECK-LP32: call L__ZN1BcvR1AEv
// CHECK-LP32: call L__ZN1BcvR1AEv