1 // PR optimization/11646 2 // Origin: <nick@ilm.com> 3 4 // This used to fail because the compiler inadvertently cleared 5 // the EDGE_ABNORMAL flag on a EDGE_EH edge and didn't delete 6 // unreachable blocks after CSE. 7 8 // { dg-do compile } 9 // { dg-options "-O -fgcse -fnon-call-exceptions" } 10 11 struct C 12 { 13 int i; 14 }; 15 16 struct allocator 17 { throwallocator18 ~allocator() throw() {} 19 }; 20 21 struct _Vector_alloc_base 22 { _Vector_alloc_base_Vector_alloc_base23 _Vector_alloc_base(const allocator& __a) {} 24 allocator _M_data_allocator; 25 struct C *_M_start, *_M_end_of_storage; _M_deallocate_Vector_alloc_base26 void _M_deallocate(struct C* __p, unsigned int __n) {} 27 }; 28 29 struct _Vector_base : _Vector_alloc_base 30 { _Vector_base_Vector_base31 _Vector_base(const allocator& __a) : _Vector_alloc_base(__a) { } ~_Vector_base_Vector_base32 ~_Vector_base() { _M_deallocate(0, _M_end_of_storage - _M_start); } 33 }; 34 35 struct vector : _Vector_base 36 { _Vector_basevector37 vector(const allocator& __a = allocator()) : _Vector_base(__a) {} 38 struct C& operator[](unsigned int __n) { return *_M_start; } 39 }; 40 41 struct A 42 { 43 float l() const; 44 A operator-(const A &) const; 45 const A& operator=(float) const; 46 }; 47 48 struct B 49 { 50 float d(); 51 }; 52 f(const A & a,B & b)53float f(const A& a, B& b) 54 { 55 vector vc; 56 int index = vc[0].i; 57 A aa; 58 float d = (aa - a).l(); 59 if (d > b.d()) aa = 0; 60 return b.d(); 61 } 62