Viewing file:  comma1.C (1.46 KB) -rw-r--r--
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// PR c++/91338 - P1161R3: Deprecate a[b,c].
// { dg-do compile { target c++11 } }
struct S {
int operator,(int) { return 42; }
};
void
fn (int *a, int b, int c)
{
a[b,c]; // { dg-warning "top-level comma expression in array subscript is deprecated" "" { target c++20_only } }
// { dg-error "top-level comma expression in array subscript changed meaning in" "" { target c++23 } .-1 }
a[(b,c)];
a[(void) b, c]; // { dg-warning "top-level comma expression in array subscript is deprecated" "" { target c++20_only } }
// { dg-error "top-level comma expression in array subscript changed meaning in" "" { target c++23 } .-1 }
a[((void) b, c)];
a[(void) b, (void) c, (void) b, b]; // { dg-warning "top-level comma expression in array subscript is deprecated" "" { target c++20_only } }
// { dg-error "top-level comma expression in array subscript changed meaning in" "" { target c++23 } .-1 }
a[((void) b, (void) c, (void) b, b)];
a[S(), 10]; // { dg-warning "top-level comma expression in array subscript is deprecated" "" { target c++20_only } }
// { dg-error "top-level comma expression in array subscript changed meaning in" "" { target c++23 } .-1 }
a[(S(), 10)];
a[int{(1,2)}];
a[int{(1,2)}, int{}]; // { dg-warning "top-level comma expression in array subscript is deprecated" "" { target c++20_only } }
// { dg-error "top-level comma expression in array subscript changed meaning in" "" { target c++23 } .-1 }
a[(int{(1,2)}, int{})];
}
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