// PR tree-optimization/27549
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// PR tree-optimization/27549
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// { dg-do compile }
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// { dg-do compile }
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// { dg-options "-O2" }
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// { dg-options "-O2" }
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typedef __SIZE_TYPE__ size_t;
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typedef __SIZE_TYPE__ size_t;
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struct E
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struct E
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{
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{
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virtual ~E () {}
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virtual ~E () {}
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virtual size_t e () const = 0;
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virtual size_t e () const = 0;
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virtual void f (char *x) const = 0;
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virtual void f (char *x) const = 0;
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};
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};
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struct F : public E
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struct F : public E
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{
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{
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virtual ~F () {}
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virtual ~F () {}
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virtual size_t e () const { return 0; }
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virtual size_t e () const { return 0; }
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virtual void f (char *x) const { *x = '\0'; }
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virtual void f (char *x) const { *x = '\0'; }
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};
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};
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struct S
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struct S
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{
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{
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S () { a = new char[32]; b = 32; c = 0; a[0] = 0; }
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S () { a = new char[32]; b = 32; c = 0; a[0] = 0; }
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void s (const char *x, size_t y) { v (c + y + 1); __builtin_memcpy(a + c, x, y); c += y; a[c] = '\0'; }
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void s (const char *x, size_t y) { v (c + y + 1); __builtin_memcpy(a + c, x, y); c += y; a[c] = '\0'; }
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void s (const E *x) { size_t l = x->e(); v (c + l + 1); x->f (a + c); c += l; }
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void s (const E *x) { size_t l = x->e(); v (c + l + 1); x->f (a + c); c += l; }
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const char *t () { return a; }
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const char *t () { return a; }
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void v (size_t n)
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void v (size_t n)
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{
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{
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if (b >= n) return;
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if (b >= n) return;
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size_t b2 = b;
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size_t b2 = b;
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char *a2 = a;
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char *a2 = a;
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for (;;)
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for (;;)
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{
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{
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b *= 2;
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b *= 2;
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if (b >= n)
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if (b >= n)
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break;
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break;
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}
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}
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a = new char[b];
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a = new char[b];
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if (b2)
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if (b2)
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{
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{
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__builtin_memcpy(a, a2, c);
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__builtin_memcpy(a, a2, c);
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a2[0] = 0;
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a2[0] = 0;
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for (size_t i = 1; i < b2; i++)
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for (size_t i = 1; i < b2; i++)
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a2[i] = a2[i - 1];
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a2[i] = a2[i - 1];
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delete[] a2;
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delete[] a2;
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}
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}
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}
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}
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~S ()
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~S ()
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{
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{
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if (b)
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if (b)
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{
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{
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a[0] = 0;
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a[0] = 0;
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for (size_t i = 1; i < b; i++)
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for (size_t i = 1; i < b; i++)
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a[i] = a[i - 1];
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a[i] = a[i - 1];
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}
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}
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delete[] a;
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delete[] a;
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}
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}
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char * a;
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char * a;
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size_t b, c;
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size_t b, c;
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};
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};
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const char *p;
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const char *p;
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size_t q;
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size_t q;
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const F u;
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const F u;
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const char *
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const char *
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foo ()
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foo ()
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{
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{
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S s;
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S s;
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s.s (p, q);
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s.s (p, q);
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s.s (&u);
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s.s (&u);
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return s.t ();
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return s.t ();
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}
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}
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