118 lines
2.4 KiB
C
118 lines
2.4 KiB
C
// PR optimization/6713
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// This testcase segfaulted on x86 because a dangling REG_EQUAL note
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// resulted in incorrect substitutions later.
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// { dg-do run }
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// { dg-options "-O2" }
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template<typename _CharT> class basic_iterator
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{
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public:
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basic_iterator(_CharT* _p) : _M_current(_p) {}
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basic_iterator& operator++() { ++_M_current; return *this; }
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_CharT& operator*() const { return *_M_current; }
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bool operator!=(basic_iterator &_rhs) { return _M_current != _rhs._M_current; }
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private:
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_CharT* _M_current;
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};
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template<typename _CharT> class basic_string
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{
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public:
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typedef unsigned int size_type;
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typedef basic_iterator<_CharT> iterator;
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private:
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struct _Rep
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{
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size_type _M_length;
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size_type _M_capacity;
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int _M_references;
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bool _M_is_leaked() const { return _M_references < 0; }
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bool _M_is_shared() const { return _M_references > 0; }
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void _M_set_leaked() { _M_references = -1; }
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void _M_set_sharable() { _M_references = 0; }
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};
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struct _Rep _M_rep;
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struct _Alloc_hider
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{
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_CharT _raw[16];
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_CharT* _M_p;
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};
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mutable _Alloc_hider _M_dataplus;
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_CharT* _M_data() const { return _M_dataplus._M_p; }
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void _M_leak() { if (!_M_rep._M_is_leaked()) _M_leak_hard(); }
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static int count;
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static void _M_leak_hard();
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public:
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explicit basic_string(const _CharT* __s);
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iterator begin() { _M_leak(); return iterator(_M_data()); }
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iterator end() { _M_leak(); return iterator(_M_data() + this->size()); }
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size_type size() const { return _M_rep._M_length; }
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};
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template<typename _CharT> basic_string<_CharT>::
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basic_string(const _CharT* __s)
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{
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int i;
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for (i=0; i<15; i++) {
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if (!__s[i])
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break;
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_M_dataplus._raw[i] = __s[i];
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}
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_M_dataplus._raw[i] = 0;
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_M_dataplus._M_p = _M_dataplus._raw;
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_M_rep._M_length = i;
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_M_rep._M_capacity = i;
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_M_rep._M_references = 1;
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}
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template<typename _CharT> int basic_string<_CharT>::count = 0;
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template<typename _CharT> void basic_string<_CharT>::
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_M_leak_hard()
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{
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count++;
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}
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typedef basic_string<char> string;
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template int basic_string<char>::count;
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int isspa(int ch)
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{
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return 0;
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}
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void foo(string& str)
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{
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string::iterator it = str.begin();
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string::iterator stop = str.end();
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for (; it != stop; ++it)
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if (isspa(*it))
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break;
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}
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int main()
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{
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string str("test");
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foo(str);
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}
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