https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85117
Bug ID: 85117
Summary: ARM: Wrong Warning Emits: parameter passing for
argument of type 'Handle<Unknown>' changed in GCC 7.1
Product: gcc
Version: 7.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: manjian2006 at gmail dot com
Target Milestone: ---
typedef enum { } Unknown;
class HandleBase {
public:
void** m_slot;
};
template<typename T> struct HandleTypes {
typedef T* ExternalType;
};
template<> struct HandleTypes<Unknown> {
typedef long long ExternalType;
};
template <class T>
class Handle: public HandleBase {
public:
typedef typename HandleTypes<T>::ExternalType ExternalType;
};
void foo(Handle<Unknown> h) {
extern void bar(Handle<Unknown> h);
bar(h);
}
The above code emits wrong warning like the title.
This is caused by arm_needs_doubleword_align fails to omit TYPE_DECL when
traversals the fields of a aggregate type.
