--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/g++.old-deja/g++.mike/p811.C	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,550 @@
+// { dg-do assemble  }
+// { dg-options "-Wno-builtin-declaration-mismatch" }
+// This test case caused the compiler to abort at one point in time.
+// prms-id: 811
+
+class ostream; class streambuf;
+
+typedef long streamoff, streampos;
+
+struct _ios_fields {  
+    streambuf *_strbuf;
+    ostream* _tie;
+    int _width;
+    unsigned long _flags;
+    char _fill;
+    unsigned char _state;
+    unsigned short _precision;
+};
+
+
+enum state_value { _good = 0, _eof = 1,  _fail = 2, _bad  = 4 };
+enum open_mode { input=1, output=2, append=8 };
+
+
+class ios : public _ios_fields {
+  public:
+    enum io_state { goodbit=0, eofbit=1, failbit=2, badbit=4 };
+    enum open_mode {
+	in=1,
+	out=2,
+	ate=4,
+	app=8,
+	trunc=16,
+	nocreate=32,
+	noreplace=64 };
+    enum seek_dir { beg, cur, end};
+    enum { skipws=01, left=02, right=04, internal=010,
+	   dec=020, oct=040, hex=0100,
+	   showbase=0200, showpoint=0400, uppercase=01000, showpos=02000,
+	   scientific=04000, fixed=0100000, unitbuf=020000, stdio=040000,
+	   dont_close=0x80000000  
+	   };
+
+    ostream* tie() const { return _tie; }
+    ostream* tie(ostream* val) { ostream* save=_tie; _tie=val; return save; }
+
+     
+    char fill() const { return _fill; }
+    char fill(char newf) { char oldf = _fill; _fill = newf; return oldf; }
+    unsigned long flags() const { return _flags; }
+    unsigned long flags(unsigned long new_val) {
+	unsigned long old_val = _flags; _flags = new_val; return old_val; }
+    unsigned short precision() const { return _precision; }
+    unsigned short precision(int newp) {
+	unsigned short oldp = _precision; _precision = (unsigned short)newp;
+	return oldp; }
+    unsigned long setf(unsigned long val) {
+	unsigned long oldbits = _flags;
+	_flags |= val; return oldbits; }
+    unsigned long setf(unsigned long val, unsigned long mask) {
+	unsigned long oldbits = _flags;
+	_flags = (_flags & ~mask) | (val & mask); return oldbits; }
+    unsigned long unsetf(unsigned long mask) {
+	unsigned long oldbits = _flags & mask;
+	_flags &= ~mask; return oldbits; }
+    int width() const { return _width; }
+    int width(long val) { long save = _width; _width = val; return save; }
+
+    static const unsigned long basefield;
+    static const unsigned long adjustfield;
+    static const unsigned long floatfield;
+
+    streambuf* rdbuf() const { return _strbuf; }
+    void clear(int state = 0) { _state = state; }
+    int good() const { return _state == 0; }
+    int eof() const { return _state & ios::eofbit; }
+    int fail() const { return _state & (ios::badbit|ios::failbit); }
+    int bad() const { return _state & ios::badbit; }
+    int rdstate() const { return _state; }
+    void set(int flag) { _state |= flag; }
+    operator void*() const { return fail() ? (void*)0 : (void*)this; }
+    int operator!() const { return fail(); }
+
+
+    void unset(state_value flag) { _state &= ~flag; }
+    void close();
+    int is_open();
+    int readable();
+    int writable();
+
+
+  protected:
+    ios(streambuf*sb) { _strbuf=sb; _state=0; _width=0; _fill=' ';
+			_flags=ios::skipws; _precision=6; }
+};
+
+
+
+
+typedef ios::seek_dir _seek_dir;
+
+
+ 
+ 
+ 
+ 
+ 
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+//# 168 "/usr/latest/lib/g++-include/streambuf.h" 3
+
+
+struct __streambuf {
+     
+    int _flags;		 
+    char* _gptr;	 
+    char* _egptr;	 
+    char* _eback;	 
+    char* _pbase;	 
+    char* _pptr;	 
+    char* _epptr;	 
+    char* _base;	 
+    char* _ebuf;	 
+    struct streambuf *_chain;
+
+
+
+
+};
+
+struct streambuf : private __streambuf {
+    friend class ios;
+    friend class istream;
+    friend class ostream;
+  protected:
+    static streambuf* _list_all;  
+    streambuf*& xchain() { return _chain; }
+    void _un_link();
+    void _link_in();
+    char* gptr() const { return _gptr; }
+    char* pptr() const { return _pptr; }
+    char* egptr() const { return _egptr; }
+    char* epptr() const { return _epptr; }
+    char* pbase() const { return _pbase; }
+    char* eback() const { return _eback; }
+    char* ebuf() const { return _ebuf; }
+    char* base() const { return _base; }
+    void xput_char(char c) { *_pptr++ = c; }
+    int xflags() { return _flags; }
+    int xflags(int f) { int fl = _flags; _flags = f; return fl; }
+    void xsetflags(int f) { _flags |= f; }
+    void gbump(int n) { _gptr += n; }
+    void pbump(int n) { _pptr += n; }
+    void setb(char* b, char* eb, int a=0);
+    void setp(char* p, char* ep) { _pbase=_pptr=p; _epptr=ep; }
+    void setg(char* eb, char* g, char *eg) { _eback=eb; _gptr=g; _egptr=eg; }
+  public:
+    static int flush_all();
+    static void flush_all_linebuffered();  
+    virtual int underflow();  
+    virtual int overflow(int c = (-1) );  
+    virtual int doallocate();
+    virtual streampos seekoff(streamoff, _seek_dir, int mode=ios::in|ios::out);
+    virtual streampos seekpos(streampos pos, int mode = ios::in|ios::out);
+    int sputbackc(char c);
+    int sungetc();
+    streambuf();
+    virtual ~streambuf();
+    int unbuffered() { return _flags & 2  ? 1 : 0; }
+    int linebuffered() { return _flags & 0x4000  ? 1 : 0; }
+    void unbuffered(int i)
+	{ if (i) _flags |= 2 ; else _flags &= ~2 ; }
+    void linebuffered(int i)
+	{ if (i) _flags |= 0x4000 ; else _flags &= ~0x4000 ; }
+    int allocate() {
+	if (base() || unbuffered()) return 0;
+	else return doallocate(); }
+    virtual int sync();
+    virtual int pbackfail(int c);
+    virtual int ungetfail();
+    virtual streambuf* setbuf(char* p, int len);
+    int in_avail() { return _egptr - _gptr; }
+    int out_waiting() { return _pptr - _pbase; }
+    virtual int sputn(const char* s, int n);
+    virtual int sgetn(char* s, int n);
+    long sgetline(char* buf, int  n, char delim, int putback_delim);
+    int sbumpc() {
+	if (_gptr >= _egptr && underflow() == (-1) ) return (-1) ;
+	else return *(unsigned char*)_gptr++; }
+    int sgetc() {
+	if (_gptr >= _egptr && underflow() == (-1) ) return (-1) ;
+	else return *(unsigned char*)_gptr; }
+    int snextc() {
+	if (++_gptr >= _egptr && underflow() == (-1) ) return (-1) ;
+	else return *(unsigned char*)_gptr; }
+    int sputc(int c) {
+	if (_pptr >= _epptr) return overflow(c);
+	return *_pptr++ = c, (unsigned char)c; }
+    int vscan(char const *fmt0, char*  ap);
+    int vform(char const *fmt0, char*  ap);
+
+
+
+
+
+
+};
+
+struct __file_fields {
+    char _fake;
+    char _shortbuf[1];
+    short _fileno;
+    int _blksize;
+    char* _save_gptr;
+    char* _save_egptr;
+    long   _offset;
+};
+
+class filebuf : public streambuf {
+    struct __file_fields _fb;
+    void init();
+  public:
+    filebuf();
+    filebuf(int fd);
+    filebuf(int fd, char* p, int len);
+    ~filebuf();
+    filebuf* attach(int fd);
+    filebuf* open(const char *filename, const char *mode);
+    filebuf* open(const char *filename, int mode, int prot = 0664);
+    virtual int underflow();
+    virtual int overflow(int c = (-1) );
+    int is_open() { return _fb._fileno >= 0; }
+    int fd() { return is_open() ? _fb._fileno : (-1) ; }
+    filebuf* close();
+    virtual int doallocate();
+    virtual streampos seekoff(streamoff, _seek_dir, int mode=ios::in|ios::out);
+    int sputn(const char* s, int n);
+    int sgetn(char* s, int n);
+    virtual int sync();
+  protected:  
+    virtual int pbackfail(int c);
+    int is_reading() { return eback() != egptr(); }
+    char* cur_ptr() { return is_reading() ?  gptr() : pptr(); }
+     
+    char* file_ptr() { return _fb._save_gptr ? _fb._save_egptr : egptr(); }
+    int do_flush();
+     
+    virtual int sys_read(char* buf, int  size);
+    virtual long   sys_seek(long  , _seek_dir);
+    virtual long sys_write(const void*, long);
+    virtual int sys_stat(void*);  
+    virtual int sys_close();
+};
+
+
+inline int ios::readable() { return rdbuf()->_flags & 4 ; }
+inline int ios::writable() { return rdbuf()->_flags & 8 ; }
+inline int ios::is_open() {return rdbuf()->_flags & 4 +8 ;}
+
+
+
+
+//# 25 "/usr/latest/lib/g++-include/iostream.h" 2 3
+
+
+class istream; class ostream;
+typedef istream& (*__imanip)(istream&);
+typedef ostream& (*__omanip)(ostream&);
+
+extern istream& ws(istream& ins);
+extern ostream& flush(ostream& outs);
+extern ostream& endl(ostream& outs);
+extern ostream& ends(ostream& outs);
+
+class ostream : public ios
+{
+    void do_osfx();
+  public:
+    ostream();
+    ostream(streambuf* sb, ostream* tied=__null );
+    ~ostream();
+
+    int opfx() { if (!good()) return 0; if (_tie) _tie->flush(); return 1; }
+    void osfx() { if (flags() & (ios::unitbuf|ios::stdio))
+		      do_osfx(); }
+    streambuf* ostreambuf() const { return _strbuf; }
+    ostream& flush();
+    ostream& put(char c);
+    ostream& write(const char *s, int n);
+    ostream& write(const unsigned char *s, int n) { return write((char*)s, n);}
+    ostream& write(const void *s, int n) { return write((char*)s, n);}
+    ostream& seekp(streampos);
+    ostream& seekp(streamoff, _seek_dir);
+    streampos tellp();
+    ostream& form(const char *format ...);
+    ostream& vform(const char *format, char*  args);
+};
+
+extern ostream& operator<<(ostream&, char c);
+inline ostream& operator<<(ostream& os, unsigned char c)
+{ return os << (char)c; }
+ 
+extern ostream& operator<<(ostream&, const char *s);
+inline ostream& operator<<(ostream& os, const unsigned char *s)
+{ return os << (const char*)s; }
+ 
+ 
+extern ostream& operator<<(ostream&, void *p);
+extern ostream& operator<<(ostream&, int n);
+extern ostream& operator<<(ostream&, long n);
+extern ostream& operator<<(ostream&, unsigned int n);
+extern ostream& operator<<(ostream&, unsigned long n);
+inline ostream& operator<<(ostream& os, short n) {return os << (int)n;}
+inline ostream& operator<<(ostream& os, unsigned short n)
+{return os << (unsigned int)n;}
+extern ostream& operator<<(ostream&, float n);
+extern ostream& operator<<(ostream&, double n);
+inline ostream& operator<<(ostream& os, __omanip func) { return (*func)(os); }
+extern ostream& operator<<(ostream&, streambuf*);
+
+class istream : public ios
+{
+    int  _gcount;
+  public:
+    istream();
+    istream(streambuf* sb, ostream*tied=__null );
+    ~istream();
+    streambuf* istreambuf() const { return _strbuf; }
+    istream& get(char& c);
+    istream& get(unsigned char& c);
+    istream& read(char *ptr, int n);
+    istream& read(unsigned char *ptr, int n) { return read((char*)ptr, n); }
+    istream& read(void *ptr, int n) { return read((char*)ptr, n); }
+     
+    istream& getline(char* ptr, int len, char delim = '\n');
+    istream& get(char* ptr, int len, char delim = '\n');
+    istream& gets(char **s, char delim = '\n');
+    int ipfx(int need) {
+	if (!good()) { set(ios::failbit); return 0; }
+	if (_tie && (need == 0 || rdbuf()->in_avail() < need)) _tie->flush();
+	if (!need && (flags() & ios::skipws) && !ws(*this)) return 0;
+	return 1;
+    }
+    int ipfx0() {  
+	if (!good()) { set(ios::failbit); return 0; }
+	if (_tie) _tie->flush();
+	if ((flags() & ios::skipws) && !ws(*this)) return 0;
+	return 1;
+    }
+    int ipfx1() {  
+	if (!good()) { set(ios::failbit); return 0; }
+	if (_tie && rdbuf()->in_avail() == 0) _tie->flush();
+	return 1;
+    }
+    int get() { if (!ipfx1()) return (-1) ;
+		int ch = _strbuf->sbumpc();
+		if (ch == (-1) ) set(ios::eofbit);
+		return ch; }
+    int peek() { if (!ipfx1()) return (-1) ;
+		int ch = _strbuf->sgetc();
+		if (ch == (-1) ) set(ios::eofbit);
+		return ch; }
+    int  gcount() { return _gcount; }
+    istream& ignore(int n=1, int delim = (-1) );
+    istream& seekg(streampos);
+    istream& seekg(streamoff, _seek_dir);
+    streampos tellg();
+    istream& putback(char ch) {
+	if (good() && _strbuf->sputbackc(ch) == (-1) ) clear(ios::badbit);
+	return *this;}
+    istream& unget() {
+	if (good() && _strbuf->sungetc() == (-1) ) clear(ios::badbit);
+	return *this;}
+
+    istream& unget(char ch) { return putback(ch); }
+    int skip(int i);
+
+};
+
+extern istream& operator>>(istream&, char*);
+inline istream& operator>>(istream& is, unsigned char* p)
+{ return is >> (char*)p; }
+ 
+extern istream& operator>>(istream&, char& c);
+extern istream& operator>>(istream&, unsigned char& c);
+ 
+extern istream& operator>>(istream&, int&);
+extern istream& operator>>(istream&, long&);
+extern istream& operator>>(istream&, short&);
+extern istream& operator>>(istream&, unsigned int&);
+extern istream& operator>>(istream&, unsigned long&);
+extern istream& operator>>(istream&, unsigned short&);
+extern istream& operator>>(istream&, float&);
+extern istream& operator>>(istream&, double&);
+inline istream& operator>>(istream& is, __imanip func) { return (*func)(is); }
+
+inline ostream& ostream::put(char c) { _strbuf->sputc(c); return *this; }
+
+class iostream : public ios {
+    int  _gcount;
+  public:
+    iostream();
+    iostream(streambuf* sb, ostream*tied=__null );
+    operator istream&() { return *(istream*)this; }
+    operator ostream&() { return *(ostream*)this; }
+    ~iostream();
+     
+    istream& get(char& c) { return ((istream*)this)->get(c); }
+    istream& get(unsigned char& c) { return ((istream*)this)->get(c); }
+    istream& read(char *ptr, int n) { return ((istream*)this)->read(ptr, n); }
+    istream& read(unsigned char *ptr, int n)
+	{ return ((istream*)this)->read((char*)ptr, n); }
+    istream& read(void *ptr, int n)
+	{ return ((istream*)this)->read((char*)ptr, n); }
+    istream& getline(char* ptr, int len, char delim = '\n')
+	{ return ((istream*)this)->getline(ptr, len, delim); }
+    istream& get(char* ptr, int len, char delim = '\n')
+	{ return ((istream*)this)->get(ptr, len, delim); }
+    istream& gets(char **s, char delim = '\n')
+	{ return ((istream*)this)->gets(s, delim); }
+    istream& ignore(int n=1, int delim = (-1) )
+	{ return ((istream*)this)->ignore(n, delim); }
+    int ipfx(int need) { return ((istream*)this)->ipfx(need); }
+    int ipfx0()  { return ((istream*)this)->ipfx0(); }
+    int ipfx1()  { return ((istream*)this)->ipfx1(); }
+    int get() { return _strbuf->sbumpc(); }
+    int peek() { return ipfx1() ? _strbuf->sgetc() : (-1) ; }
+    int  gcount() { return _gcount; }
+    istream& putback(char ch) { return ((istream*)this)->putback(ch); }
+    istream& unget() { return ((istream*)this)->unget(); }
+    istream& seekg(streampos pos) { return ((istream*)this)->seekg(pos); }
+    istream& seekg(streamoff off, _seek_dir dir)
+	{ return ((istream*)this)->seekg(off, dir); }
+    streampos tellg() { return ((istream*)this)->tellg(); }
+
+    istream& unget(char ch) { return putback(ch); }
+
+
+     
+    int opfx() { return ((ostream*)this)->opfx(); }
+    void osfx() { ((ostream*)this)->osfx(); }
+    ostream& flush() { return ((ostream*)this)->flush(); }
+    ostream& put(char c) { return ((ostream*)this)->put(c); }
+    ostream& write(const char *s, int n)
+	{ return ((ostream*)this)->write(s, n); }
+    ostream& write(const unsigned char *s, int n)
+	{ return ((ostream*)this)->write((char*)s, n); }
+    ostream& write(const void *s, int n)
+	{ return ((ostream*)this)->write((char*)s, n); }
+    ostream& form(const char *format ...);
+    ostream& vform(const char *format, char*  args)
+	{ return ((ostream*)this)->vform(format, args); }
+    ostream& seekp(streampos pos) { return ((ostream*)this)->seekp(pos); }
+    ostream& seekp(streamoff off, _seek_dir dir)
+	{ return ((ostream*)this)->seekp(off, dir); }
+    streampos tellp() { return ((ostream*)this)->tellp(); }
+};
+
+extern istream cin;
+extern ostream cout, cerr, clog;  
+
+struct Iostream_init { } ;   
+
+inline ios& dec(ios& i)
+{ i.setf(ios::dec, ios::dec|ios::hex|ios::oct); return i; }
+inline ios& hex(ios& i)
+{ i.setf(ios::hex, ios::dec|ios::hex|ios::oct); return i; }
+inline ios& oct(ios& i)
+{ i.setf(ios::oct, ios::dec|ios::hex|ios::oct); return i; }
+
+
+//# 7 "/usr/latest/lib/g++-include/stream.h" 2 3
+
+
+extern char* form(const char*, ...);
+
+extern char* dec(long, int=0);
+extern char* dec(int, int=0);
+extern char* dec(unsigned long, int=0);
+extern char* dec(unsigned int, int=0);
+
+extern char* hex(long, int=0);
+extern char* hex(int, int=0);
+extern char* hex(unsigned long, int=0);
+extern char* hex(unsigned int, int=0);
+
+extern char* oct(long, int=0);
+extern char* oct(int, int=0);
+extern char* oct(unsigned long, int=0);
+extern char* oct(unsigned int, int=0);
+
+inline istream& WS(istream& str) { return ws(str); }
+
+
+//# 9 "test.C" 2
+
+
+class Y {
+public:
+    Y() {}
+  virtual const char *stringify() = 0;
+    virtual char *stringify2() const = 0; // { dg-error "overriding" } 
+};
+
+class X: public Y { // { dg-message "defined here" }
+public:
+    X(): Y() {}
+    const char *stringify();		// { dg-message "candidate" }
+    const char *stringify2() const;  // { dg-message "candidate" }
+  // { dg-error "conflicting return type" "" { target *-*-* } .-1 }
+};
+
+char *
+X::stringify() const  // { dg-error "no declaration matches" }
+{
+    return "stringify";
+}
+
+const char *
+X::stringify2()   // { dg-error "no declaration matches" }
+{
+    return "stringify2";
+}
+
+main()
+{
+    X x;
+    Y& y = x;
+
+    cout << "x\n";
+    cout << x.stringify() << '\n';
+    cout << x.stringify2() << '\n';
+
+    cout << "y\n";
+    cout << y.stringify() << '\n';
+    cout << y.stringify2() << '\n';
+}