src/test/ui/consts/min_const_fn/min_const_fn.stderr

   1 error[E0493]: destructors cannot be evaluated at compile-time
   2   --> $DIR/min_const_fn.rs:37:25
   3    |
   4 LL |     const fn into_inner(self) -> T { self.0 }
   5    |                         ^^^^ constant functions cannot evaluate destructors
   6
   7 error[E0723]: mutable references in const fn are unstable
   8   --> $DIR/min_const_fn.rs:39:36
   9    |
  10 LL |     const fn get_mut(&mut self) -> &mut T { &mut self.0 }
  11    |                                    ^^^^^^
  12    |
  13    = note: for more information, see issue https://github.com/rust-lang/rust/issues/57563
  14    = help: add #![feature(const_fn)] to the crate attributes to enable
  15
  16 error[E0493]: destructors cannot be evaluated at compile-time
  17   --> $DIR/min_const_fn.rs:44:28
  18    |
  19 LL |     const fn into_inner_lt(self) -> T { self.0 }
  20    |                            ^^^^ constant functions cannot evaluate destructors
  21
  22 error[E0723]: mutable references in const fn are unstable
  23   --> $DIR/min_const_fn.rs:46:42
  24    |
  25 LL |     const fn get_mut_lt(&'a mut self) -> &mut T { &mut self.0 }
  26    |                                          ^^^^^^
  27    |
  28    = note: for more information, see issue https://github.com/rust-lang/rust/issues/57563
  29    = help: add #![feature(const_fn)] to the crate attributes to enable
  30
  31 error[E0493]: destructors cannot be evaluated at compile-time
  32   --> $DIR/min_const_fn.rs:51:27
  33    |
  34 LL |     const fn into_inner_s(self) -> T { self.0 }
  35    |                           ^^^^ constant functions cannot evaluate destructors
  36
  37 error[E0723]: mutable references in const fn are unstable
  38   --> $DIR/min_const_fn.rs:53:38
  39    |
  40 LL |     const fn get_mut_s(&mut self) -> &mut T { &mut self.0 }
  41    |                                      ^^^^^^
  42    |
  43    = note: for more information, see issue https://github.com/rust-lang/rust/issues/57563
  44    = help: add #![feature(const_fn)] to the crate attributes to enable
  45
  46 error[E0723]: mutable references in const fn are unstable
  47   --> $DIR/min_const_fn.rs:58:39
  48    |
  49 LL |     const fn get_mut_sq(&mut self) -> &mut T { &mut self.0 }
  50    |                                       ^^^^^^
  51    |
  52    = note: for more information, see issue https://github.com/rust-lang/rust/issues/57563
  53    = help: add #![feature(const_fn)] to the crate attributes to enable
  54
  55 error[E0723]: trait bounds other than `Sized` on const fn parameters are unstable
  56   --> $DIR/min_const_fn.rs:76:16
  57    |
  58 LL | const fn foo11<T: std::fmt::Display>(t: T) -> T { t }
  59    |                ^
  60    |
  61    = note: for more information, see issue https://github.com/rust-lang/rust/issues/57563
  62    = help: add #![feature(const_fn)] to the crate attributes to enable
  63
  64 error[E0723]: trait bounds other than `Sized` on const fn parameters are unstable
  65   --> $DIR/min_const_fn.rs:78:18
  66    |
  67 LL | const fn foo11_2<T: Send>(t: T) -> T { t }
  68    |                  ^
  69    |
  70    = note: for more information, see issue https://github.com/rust-lang/rust/issues/57563
  71    = help: add #![feature(const_fn)] to the crate attributes to enable
  72
  73 error[E0723]: only int, `bool` and `char` operations are stable in const fn
  74   --> $DIR/min_const_fn.rs:80:33
  75    |
  76 LL | const fn foo19(f: f32) -> f32 { f * 2.0 }
  77    |                                 ^^^^^^^
  78    |
  79    = note: for more information, see issue https://github.com/rust-lang/rust/issues/57563
  80    = help: add #![feature(const_fn)] to the crate attributes to enable
  81
  82 error[E0723]: only int, `bool` and `char` operations are stable in const fn
  83   --> $DIR/min_const_fn.rs:82:35
  84    |
  85 LL | const fn foo19_2(f: f32) -> f32 { 2.0 - f }
  86    |                                   ^^^^^^^
  87    |
  88    = note: for more information, see issue https://github.com/rust-lang/rust/issues/57563
  89    = help: add #![feature(const_fn)] to the crate attributes to enable
  90
  91 error[E0723]: only int and `bool` operations are stable in const fn
  92   --> $DIR/min_const_fn.rs:84:35
  93    |
  94 LL | const fn foo19_3(f: f32) -> f32 { -f }
  95    |                                   ^^
  96    |
  97    = note: for more information, see issue https://github.com/rust-lang/rust/issues/57563
  98    = help: add #![feature(const_fn)] to the crate attributes to enable
  99
 100 error[E0723]: only int, `bool` and `char` operations are stable in const fn
 101   --> $DIR/min_const_fn.rs:86:43
 102    |
 103 LL | const fn foo19_4(f: f32, g: f32) -> f32 { f / g }
 104    |                                           ^^^^^
 105    |
 106    = note: for more information, see issue https://github.com/rust-lang/rust/issues/57563
 107    = help: add #![feature(const_fn)] to the crate attributes to enable
 108
 109 error[E0723]: cannot access `static` items in const fn
 110   --> $DIR/min_const_fn.rs:90:27
 111    |
 112 LL | const fn foo25() -> u32 { BAR }
 113    |                           ^^^
 114    |
 115    = note: for more information, see issue https://github.com/rust-lang/rust/issues/57563
 116    = help: add #![feature(const_fn)] to the crate attributes to enable
 117
 118 error[E0723]: cannot access `static` items in const fn
 119   --> $DIR/min_const_fn.rs:91:36
 120    |
 121 LL | const fn foo26() -> &'static u32 { &BAR }
 122    |                                    ^^^^
 123    |
 124    = note: for more information, see issue https://github.com/rust-lang/rust/issues/57563
 125    = help: add #![feature(const_fn)] to the crate attributes to enable
 126
 127 error[E0723]: casting pointers to ints is unstable in const fn
 128   --> $DIR/min_const_fn.rs:92:42
 129    |
 130 LL | const fn foo30(x: *const u32) -> usize { x as usize }
 131    |                                          ^^^^^^^^^^
 132    |
 133    = note: for more information, see issue https://github.com/rust-lang/rust/issues/57563
 134    = help: add #![feature(const_fn)] to the crate attributes to enable
 135
 136 error[E0723]: casting pointers to ints is unstable in const fn
 137   --> $DIR/min_const_fn.rs:94:63
 138    |
 139 LL | const fn foo30_with_unsafe(x: *const u32) -> usize { unsafe { x as usize } }
 140    |                                                               ^^^^^^^^^^
 141    |
 142    = note: for more information, see issue https://github.com/rust-lang/rust/issues/57563
 143    = help: add #![feature(const_fn)] to the crate attributes to enable
 144
 145 error[E0723]: casting pointers to ints is unstable in const fn
 146   --> $DIR/min_const_fn.rs:96:42
 147    |
 148 LL | const fn foo30_2(x: *mut u32) -> usize { x as usize }
 149    |                                          ^^^^^^^^^^
 150    |
 151    = note: for more information, see issue https://github.com/rust-lang/rust/issues/57563
 152    = help: add #![feature(const_fn)] to the crate attributes to enable
 153
 154 error[E0723]: casting pointers to ints is unstable in const fn
 155   --> $DIR/min_const_fn.rs:98:63
 156    |
 157 LL | const fn foo30_2_with_unsafe(x: *mut u32) -> usize { unsafe { x as usize } }
 158    |                                                               ^^^^^^^^^^
 159    |
 160    = note: for more information, see issue https://github.com/rust-lang/rust/issues/57563
 161    = help: add #![feature(const_fn)] to the crate attributes to enable
 162
 163 error[E0723]: `if`, `match`, `&&` and `||` are not stable in const fn
 164   --> $DIR/min_const_fn.rs:100:38
 165    |
 166 LL | const fn foo30_4(b: bool) -> usize { if b { 1 } else { 42 } }
 167    |                                      ^^^^^^^^^^^^^^^^^^^^^^
 168    |
 169    = note: for more information, see issue https://github.com/rust-lang/rust/issues/57563
 170    = help: add #![feature(const_fn)] to the crate attributes to enable
 171
 172 error[E0723]: `if`, `match`, `&&` and `||` are not stable in const fn
 173   --> $DIR/min_const_fn.rs:102:29
 174    |
 175 LL | const fn foo30_5(b: bool) { while b { } }
 176    |                             ^^^^^^^^^^^
 177    |
 178    = note: for more information, see issue https://github.com/rust-lang/rust/issues/57563
 179    = help: add #![feature(const_fn)] to the crate attributes to enable
 180
 181 error[E0723]: `if`, `match`, `&&` and `||` are not stable in const fn
 182   --> $DIR/min_const_fn.rs:104:44
 183    |
 184 LL | const fn foo36(a: bool, b: bool) -> bool { a && b }
 185    |                                            ^^^^^^
 186    |
 187    = note: for more information, see issue https://github.com/rust-lang/rust/issues/57563
 188    = help: add #![feature(const_fn)] to the crate attributes to enable
 189
 190 error[E0723]: `if`, `match`, `&&` and `||` are not stable in const fn
 191   --> $DIR/min_const_fn.rs:106:44
 192    |
 193 LL | const fn foo37(a: bool, b: bool) -> bool { a || b }
 194    |                                            ^^^^^^
 195    |
 196    = note: for more information, see issue https://github.com/rust-lang/rust/issues/57563
 197    = help: add #![feature(const_fn)] to the crate attributes to enable
 198
 199 error[E0723]: mutable references in const fn are unstable
 200   --> $DIR/min_const_fn.rs:108:14
 201    |
 202 LL | const fn inc(x: &mut i32) { *x += 1 }
 203    |              ^
 204    |
 205    = note: for more information, see issue https://github.com/rust-lang/rust/issues/57563
 206    = help: add #![feature(const_fn)] to the crate attributes to enable
 207
 208 error[E0723]: trait bounds other than `Sized` on const fn parameters are unstable
 209   --> $DIR/min_const_fn.rs:113:6
 210    |
 211 LL | impl<T: std::fmt::Debug> Foo<T> {
 212    |      ^
 213    |
 214    = note: for more information, see issue https://github.com/rust-lang/rust/issues/57563
 215    = help: add #![feature(const_fn)] to the crate attributes to enable
 216
 217 error[E0723]: trait bounds other than `Sized` on const fn parameters are unstable
 218   --> $DIR/min_const_fn.rs:118:6
 219    |
 220 LL | impl<T: std::fmt::Debug + Sized> Foo<T> {
 221    |      ^
 222    |
 223    = note: for more information, see issue https://github.com/rust-lang/rust/issues/57563
 224    = help: add #![feature(const_fn)] to the crate attributes to enable
 225
 226 error[E0723]: trait bounds other than `Sized` on const fn parameters are unstable
 227   --> $DIR/min_const_fn.rs:123:6
 228    |
 229 LL | impl<T: Sync + Sized> Foo<T> {
 230    |      ^
 231    |
 232    = note: for more information, see issue https://github.com/rust-lang/rust/issues/57563
 233    = help: add #![feature(const_fn)] to the crate attributes to enable
 234
 235 error[E0723]: `impl Trait` in const fn is unstable
 236   --> $DIR/min_const_fn.rs:129:24
 237    |
 238 LL | const fn no_rpit2() -> AlanTuring<impl std::fmt::Debug> { AlanTuring(0) }
 239    |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 240    |
 241    = note: for more information, see issue https://github.com/rust-lang/rust/issues/57563
 242    = help: add #![feature(const_fn)] to the crate attributes to enable
 243
 244 error[E0723]: trait bounds other than `Sized` on const fn parameters are unstable
 245   --> $DIR/min_const_fn.rs:131:34
 246    |
 247 LL | const fn no_apit2(_x: AlanTuring<impl std::fmt::Debug>) {}
 248    |                                  ^^^^^^^^^^^^^^^^^^^^
 249    |
 250    = note: for more information, see issue https://github.com/rust-lang/rust/issues/57563
 251    = help: add #![feature(const_fn)] to the crate attributes to enable
 252
 253 error[E0723]: trait bounds other than `Sized` on const fn parameters are unstable
 254   --> $DIR/min_const_fn.rs:133:22
 255    |
 256 LL | const fn no_apit(_x: impl std::fmt::Debug) {}
 257    |                      ^^^^^^^^^^^^^^^^^^^^
 258    |
 259    = note: for more information, see issue https://github.com/rust-lang/rust/issues/57563
 260    = help: add #![feature(const_fn)] to the crate attributes to enable
 261
 262 error[E0723]: `impl Trait` in const fn is unstable
 263   --> $DIR/min_const_fn.rs:134:23
 264    |
 265 LL | const fn no_rpit() -> impl std::fmt::Debug {}
 266    |                       ^^^^^^^^^^^^^^^^^^^^
 267    |
 268    = note: for more information, see issue https://github.com/rust-lang/rust/issues/57563
 269    = help: add #![feature(const_fn)] to the crate attributes to enable
 270
 271 error[E0723]: trait bounds other than `Sized` on const fn parameters are unstable
 272   --> $DIR/min_const_fn.rs:135:23
 273    |
 274 LL | const fn no_dyn_trait(_x: &dyn std::fmt::Debug) {}
 275    |                       ^^
 276    |
 277    = note: for more information, see issue https://github.com/rust-lang/rust/issues/57563
 278    = help: add #![feature(const_fn)] to the crate attributes to enable
 279
 280 error[E0723]: trait bounds other than `Sized` on const fn parameters are unstable
 281   --> $DIR/min_const_fn.rs:136:32
 282    |
 283 LL | const fn no_dyn_trait_ret() -> &'static dyn std::fmt::Debug { &() }
 284    |                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 285    |
 286    = note: for more information, see issue https://github.com/rust-lang/rust/issues/57563
 287    = help: add #![feature(const_fn)] to the crate attributes to enable
 288
 289 warning[E0515]: cannot return reference to temporary value
 290   --> $DIR/min_const_fn.rs:136:63
 291    |
 292 LL | const fn no_dyn_trait_ret() -> &'static dyn std::fmt::Debug { &() }
 293    |                                                               ^--
 294    |                                                               ||
 295    |                                                               |temporary value created here
 296    |                                                               returns a reference to data owned by the current function
 297    |
 298    = warning: this error has been downgraded to a warning for backwards compatibility with previous releases
 299    = warning: this represents potential undefined behavior in your code and this warning will become a hard error in the future
 300
 301 error[E0723]: trait bounds other than `Sized` on const fn parameters are unstable
 302   --> $DIR/min_const_fn.rs:144:41
 303    |
 304 LL | const fn really_no_traits_i_mean_it() { (&() as &std::fmt::Debug, ()).1 }
 305    |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 306    |
 307    = note: for more information, see issue https://github.com/rust-lang/rust/issues/57563
 308    = help: add #![feature(const_fn)] to the crate attributes to enable
 309
 310 error[E0723]: function pointers in const fn are unstable
 311   --> $DIR/min_const_fn.rs:147:21
 312    |
 313 LL | const fn no_fn_ptrs(_x: fn()) {}
 314    |                     ^^
 315    |
 316    = note: for more information, see issue https://github.com/rust-lang/rust/issues/57563
 317    = help: add #![feature(const_fn)] to the crate attributes to enable
 318
 319 error[E0723]: function pointers in const fn are unstable
 320   --> $DIR/min_const_fn.rs:149:27
 321    |
 322 LL | const fn no_fn_ptrs2() -> fn() { fn foo() {} foo }
 323    |                           ^^^^
 324    |
 325    = note: for more information, see issue https://github.com/rust-lang/rust/issues/57563
 326    = help: add #![feature(const_fn)] to the crate attributes to enable
 327
 328 error: aborting due to 36 previous errors
 329
 330 Some errors have detailed explanations: E0515, E0723.
 331 For more information about an error, try `rustc --explain E0515`.