28 lines
812 B
C
28 lines
812 B
C
// { dg-do assemble }
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// { dg-options "-Wconversion" }
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// Test that we resolve this case as mandated by the standard, but also
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// warn about it. We choose op char* not because it is a member of B --
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// the standard says that all conversion ops are treated as coming from
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// the type of the argument -- but because it is non-const.
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struct A {
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operator const char *() const { return ""; }
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};
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struct B : public A {
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operator char *() { return 0; }
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};
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int main()
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{
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B b;
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if ((const char *)b != 0) // { dg-warning "choosing 'B" "B" } surprising overload resolution
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// { dg-warning "for conversion" "conv" { target *-*-* } 19 }
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// { dg-message "note" "note" { target *-*-* } 19 }
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return 1;
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if ((const char *)(const B)b == 0)
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return 2;
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if ((const char *)(const B &)b == 0)
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return 3;
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}
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