56 lines
1.3 KiB
Rust
56 lines
1.3 KiB
Rust
#![feature(min_const_generics)]
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fn foo<const C: usize>() {}
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const BAR: usize = 42;
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fn a() {
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foo::<BAR + 3>(); //~ ERROR expected one of
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}
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fn b() {
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// FIXME(const_generics): these diagnostics are awful, because trait objects without `dyn` were
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// a terrible mistake.
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foo::<BAR + BAR>();
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//~^ ERROR expected trait, found constant `BAR`
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//~| ERROR expected trait, found constant `BAR`
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//~| ERROR wrong number of const arguments: expected 1, found 0
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//~| ERROR wrong number of type arguments: expected 0, found 1
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//~| WARN trait objects without an explicit `dyn` are deprecated
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}
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fn c() {
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foo::<3 + 3>(); //~ ERROR expressions must be enclosed in braces
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}
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fn d() {
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foo::<BAR - 3>(); //~ ERROR expected one of
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}
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fn e() {
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foo::<BAR - BAR>(); //~ ERROR expected one of
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}
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fn f() {
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foo::<100 - BAR>(); //~ ERROR expressions must be enclosed in braces
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}
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fn g() {
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foo::<bar<i32>()>(); //~ ERROR expected one of
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}
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fn h() {
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foo::<bar::<i32>()>(); //~ ERROR expected one of
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}
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fn i() {
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foo::<bar::<i32>() + BAR>(); //~ ERROR expected one of
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}
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fn j() {
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foo::<bar::<i32>() - BAR>(); //~ ERROR expected one of
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}
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fn k() {
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foo::<BAR - bar::<i32>()>(); //~ ERROR expected one of
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}
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fn l() {
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foo::<BAR - bar::<i32>()>(); //~ ERROR expected one of
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}
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const fn bar<const C: usize>() -> usize {
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C
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}
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fn main() {}
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