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1 // PR c++/44625
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2 // { dg-do compile }
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3 // { dg-options "" }
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4
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5 template<typename FP_> struct Vec { // { dg-message "note" }
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6 Vec& operator^=(Vec& rhs) {
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7 union {
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8 struct {FP_ x,y,z;};
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9 }; // { dg-error "anonymous struct" }
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10 X = y*rhs.z() - z*rhs.y(); // { dg-error "not declared|no member" }
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11 }
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12 Vec& operator^(Vec& rhs) {
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13 return Vec(*this)^=rhs; // { dg-message "required" }
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14 }
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15 };
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16 Vec<double> v(3,4,12); // { dg-error "no matching" }
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17 Vec<double> V(12,4,3); // { dg-error "no matching" }
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18 Vec<double> c = v^V; // { dg-message "required" }
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