95 lines
2.6 KiB
C
95 lines
2.6 KiB
C
// PR debug/43290
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// { dg-do compile }
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// { dg-options "-O2" }
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// { dg-options "-O3 -mavx -fPIC -mtune=core2" { target { { i?86-*-* x86_64-*-* } && { ilp32 && fpic } } } }
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namespace std
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{
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template <class> struct char_traits;
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}
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typedef struct { union { char __wchb[4]; }; } mbstate_t;
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namespace std
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{
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template <typename _StateT> struct fpos
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{
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long long _M_off;
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_StateT _M_state;
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fpos (long long):_M_off (), _M_state () { }
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_StateT state () { return _M_state; }
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};
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typedef fpos <mbstate_t> streampos;
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}
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namespace std
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{
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template <> struct char_traits <char>
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{
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typedef streampos pos_type;
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typedef long long off_type;
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typedef mbstate_t state_type;
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};
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}
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struct pthread_mutex_t;
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namespace
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{
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enum _Ios_Openmode { _S_in = 3, _S_out };
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enum _Ios_Seekdir { _S_beg };
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struct ios_base
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{
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typedef _Ios_Openmode openmode;
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static const openmode in = _S_in;
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static const openmode out = _S_out;
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typedef _Ios_Seekdir seekdir;
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static const seekdir beg = _S_beg;
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};
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template < typename _CharT, typename > struct basic_streambuf
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{
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typedef _CharT char_type;
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char_type * _M_in_beg;
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char_type *eback () { return _M_in_beg; }
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char_type *gptr () {}
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};
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}
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namespace std
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{
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typedef struct pthread_mutex_t __c_lock;
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template <typename> class __basic_file;
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template <> struct __basic_file <char>
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{
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__basic_file (__c_lock * = 0);
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bool is_open ();
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};
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template <typename _CharT, typename _Traits> struct basic_filebuf : public basic_streambuf <_CharT, _Traits>
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{
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typedef _CharT char_type;
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typedef _Traits traits_type;
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typedef typename traits_type::pos_type pos_type;
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typedef typename traits_type::off_type off_type;
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typedef __basic_file < char >__file_type;
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typedef typename traits_type::state_type __state_type;
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__file_type _M_file;
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char_type *_M_pback_cur_save;
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bool _M_pback_init;
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void _M_destroy_pback () throw ()
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{
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_M_pback_cur_save += this->gptr () != this->eback ();
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_M_pback_init = false;
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}
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bool is_open () throw () { return _M_file.is_open (); }
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pos_type seekpos (pos_type, ios_base::openmode = ios_base::in | ios_base::out);
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pos_type _M_seek (off_type, ios_base::seekdir, __state_type);
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};
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template <typename _CharT, typename _Traits>
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typename basic_filebuf <_CharT, _Traits>::pos_type
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basic_filebuf <_CharT, _Traits>::seekpos (pos_type __pos, ios_base::openmode)
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{
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pos_type __ret = (off_type ());
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if (this->is_open ())
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{
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_M_destroy_pback ();
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__ret = _M_seek (off_type (), ios_base::beg, __pos.state ());
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}
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return __ret;
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}
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template class basic_filebuf <char, char_traits <char> >;
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}
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