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Permit auto SCS on parameter declarations, C++03 [dcl.stc]p2 

llvm-svn: 142649
This commit is contained in:
Peter Collingbourne 2011-10-21 11:55:09 +00:00
parent d315157f12
commit 99eddc3d92
2 changed files with 31 additions and 0 deletions
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5
clang/lib/Sema/SemaDecl.cpp
View File

@ -6592,11 +6592,16 @@ Decl *Sema::ActOnParamDeclarator(Scope *S, Declarator &D) {
const DeclSpec &DS = D.getDeclSpec();
// Verify C99 6.7.5.3p2: The only SCS allowed is 'register'.
// C++03 [dcl.stc]p2 also permits 'auto'.
VarDecl::StorageClass StorageClass = SC_None;
VarDecl::StorageClass StorageClassAsWritten = SC_None;
if (DS.getStorageClassSpec() == DeclSpec::SCS_register) {
StorageClass = SC_Register;
StorageClassAsWritten = SC_Register;
} else if (getLangOptions().CPlusPlus &&
DS.getStorageClassSpec() == DeclSpec::SCS_auto) {
StorageClass = SC_Auto;
StorageClassAsWritten = SC_Auto;
} else if (DS.getStorageClassSpec() != DeclSpec::SCS_unspecified) {
Diag(DS.getStorageClassSpecLoc(),
diag::err_invalid_storage_class_in_func_decl);

26
clang/test/CXX/dcl.dcl/dcl.spec/dcl.stc/p2.cpp Normal file
View File

@ -0,0 +1,26 @@
// RUN: %clang_cc1 -fsyntax-only -verify -Wno-c++0x-compat %s
// The auto or register specifiers can be applied only to names of objects
// declared in a block (6.3) or to function parameters (8.4).
auto int ao; // expected-error {{illegal storage class on file-scoped variable}}
auto void af(); // expected-error {{illegal storage class on function}}
register int ro; // expected-error {{illegal storage class on file-scoped variable}}
register void rf(); // expected-error {{illegal storage class on function}}
struct S {
auto int ao; // expected-error {{storage class specified for a member declaration}}
auto void af(); // expected-error {{storage class specified for a member declaration}}
register int ro; // expected-error {{storage class specified for a member declaration}}
register void rf(); // expected-error {{storage class specified for a member declaration}}
};
void foo(auto int ap, register int rp) {
auto int abo;
auto void abf(); // expected-error {{illegal storage class on function}}
register int rbo;
register void rbf(); // expected-error {{illegal storage class on function}}
}