mirror of https://github.com/rust-lang/rust
35 lines
936 B
Rust
35 lines
936 B
Rust
//@revisions: noopt opt
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//@ build-fail
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//@[noopt] compile-flags: -Copt-level=0
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//@[opt] compile-flags: -O
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//! This fails without optimizations, so it should also fail with optimizations.
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struct Late<T>(T);
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impl<T> Late<T> {
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const FAIL: () = panic!(); //~ERROR evaluation of `Late::<i32>::FAIL` failed
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const FNPTR: fn() = || Self::FAIL;
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}
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// This function is not actually called, but it is mentioned in dead code in a function that is
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// called. The function then mentions a const that evaluates to a fnptr that points to a function
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// that used a const that fails to evaluate.
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// This tests that when processing mentioned items, we also check the fnptrs in the final values
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// of consts that we encounter.
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#[inline(never)]
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fn not_called<T>() {
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if false {
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let _ = Late::<T>::FNPTR;
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}
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}
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#[inline(never)]
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fn called<T>() {
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if false {
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not_called::<T>();
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}
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}
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pub fn main() {
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called::<i32>();
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}
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