// { dg-do run }
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// { dg-do run }
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extern "C" int printf (const char *, ...);
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extern "C" int printf (const char *, ...);
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|
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int c, d;
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int c, d;
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class Foo
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class Foo
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{
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{
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public:
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public:
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Foo() { printf("Foo() 0x%08lx\n", (__SIZE_TYPE__)this); ++c; }
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Foo() { printf("Foo() 0x%08lx\n", (__SIZE_TYPE__)this); ++c; }
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Foo(Foo const &) { printf("Foo(Foo const &) 0x%08lx\n", (__SIZE_TYPE__)this); }
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Foo(Foo const &) { printf("Foo(Foo const &) 0x%08lx\n", (__SIZE_TYPE__)this); }
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~Foo() { printf("~Foo() 0x%08lx\n", (__SIZE_TYPE__)this); ++d; }
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~Foo() { printf("~Foo() 0x%08lx\n", (__SIZE_TYPE__)this); ++d; }
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};
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};
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// Bar creates constructs a temporary Foo() as a default
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// Bar creates constructs a temporary Foo() as a default
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class Bar
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class Bar
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{
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{
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public:
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public:
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Bar(Foo const & = Foo()) { printf("Bar(Foo const &) 0x%08lx\n", (__SIZE_TYPE__)this); }
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Bar(Foo const & = Foo()) { printf("Bar(Foo const &) 0x%08lx\n", (__SIZE_TYPE__)this); }
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};
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};
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void fakeRef(Bar *)
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void fakeRef(Bar *)
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{
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{
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}
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}
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int main()
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int main()
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{
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{
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// Create array of Bar. Will use default argument on constructor.
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// Create array of Bar. Will use default argument on constructor.
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// The old compiler will loop constructing Bar. Each loop will
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// The old compiler will loop constructing Bar. Each loop will
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// construct a temporary Foo() but will not destruct the Foo().
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// construct a temporary Foo() but will not destruct the Foo().
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// The Foo() temporary is destructed only once after the loop
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// The Foo() temporary is destructed only once after the loop
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// completes. This could lead to a memory leak if the constructor
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// completes. This could lead to a memory leak if the constructor
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// of Foo() allocates memory.
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// of Foo() allocates memory.
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Bar bar[2];
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Bar bar[2];
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fakeRef(bar);
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fakeRef(bar);
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printf("Done\n");
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printf("Done\n");
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if (c == d && c == 2)
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if (c == d && c == 2)
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return 0;
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return 0;
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return 1;
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return 1;
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}
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}
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