75 lines
2.1 KiB
Rust
75 lines
2.1 KiB
Rust
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//@ add-core-stubs
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//@ revisions: aarch64 x86_64
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//@ [aarch64] compile-flags: --target aarch64-unknown-none
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//@ [aarch64] needs-llvm-components: aarch64
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//@ [x86_64] compile-flags: --target x86_64-unknown-none
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//@ [x86_64] needs-llvm-components: x86
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//@ compile-flags: -Ctarget-feature=-crt-static -Zsanitizer=kcfi -Cno-prepopulate-passes -Copt-level=0
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#![feature(no_core, lang_items)]
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#![crate_type = "lib"]
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#![no_core]
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// A `ReifyShim` should only be created when the trait is dyn-compatible.
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extern crate minicore;
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use minicore::*;
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trait DynCompatible {
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fn dyn_name(&self) -> &'static str;
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fn dyn_name_default(&self) -> &'static str {
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let _ = self;
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"dyn_default"
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}
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}
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// Not dyn-compatible because the `Self: Sized` bound is missing.
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trait NotDynCompatible {
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fn not_dyn_name() -> &'static str;
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fn not_dyn_name_default() -> &'static str {
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"not_dyn_default"
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}
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}
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struct S;
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impl DynCompatible for S {
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fn dyn_name(&self) -> &'static str {
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"dyn_compatible"
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}
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}
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impl NotDynCompatible for S {
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fn not_dyn_name() -> &'static str {
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"not_dyn_compatible"
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}
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}
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#[no_mangle]
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pub fn main() {
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let s = S;
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// `DynCompatible` is indeed dyn-compatible.
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let _: &dyn DynCompatible = &s;
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// CHECK: call <fn_ptr_reify_shim::S as fn_ptr_reify_shim::DynCompatible>::dyn_name{{.*}}reify.shim.fnptr
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let dyn_name = S::dyn_name as fn(&S) -> &str;
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let _unused = dyn_name(&s);
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// CHECK: call fn_ptr_reify_shim::DynCompatible::dyn_name_default{{.*}}reify.shim.fnptr
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let dyn_name_default = S::dyn_name_default as fn(&S) -> &str;
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let _unused = dyn_name_default(&s);
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// Check using $ (end-of-line) that these calls do not contain `reify.shim.fnptr`.
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// CHECK: call <fn_ptr_reify_shim::S as fn_ptr_reify_shim::NotDynCompatible>::not_dyn_name{{$}}
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let not_dyn_name = S::not_dyn_name as fn() -> &'static str;
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let _unused = not_dyn_name();
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// CHECK: call fn_ptr_reify_shim::NotDynCompatible::not_dyn_name_default{{$}}
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let not_dyn_name_default = S::not_dyn_name_default as fn() -> &'static str;
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let _unused = not_dyn_name_default();
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}
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