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| author | Mara Bos <m-ou.se@m-ou.se> | 2021-07-10 18:39:25 +0200 |
|---|---|---|
| committer | Mara Bos <m-ou.se@m-ou.se> | 2021-07-28 16:18:38 +0200 |
| commit | 0b8033ad8d320c05ec24de5b4538099f6c3b2e4d (patch) | |
| tree | 22633844c613061ded1b3c9f8a795ea0aa69c217 /compiler/rustc_mir/src/transform | |
| parent | 4e6356188f14b2c05957a4671e7a8e857fa5f429 (diff) | |
| download | rust-0b8033ad8d320c05ec24de5b4538099f6c3b2e4d.tar.gz rust-0b8033ad8d320c05ec24de5b4538099f6c3b2e4d.zip | |
Improve comments about const panic handling
Co-authored-by: Ralf Jung <post@ralfj.de>
Diffstat (limited to 'compiler/rustc_mir/src/transform')
| -rw-r--r-- | compiler/rustc_mir/src/transform/check_consts/mod.rs | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/compiler/rustc_mir/src/transform/check_consts/mod.rs b/compiler/rustc_mir/src/transform/check_consts/mod.rs index ba8189cf9a8..7e22ed22db4 100644 --- a/compiler/rustc_mir/src/transform/check_consts/mod.rs +++ b/compiler/rustc_mir/src/transform/check_consts/mod.rs @@ -74,6 +74,9 @@ impl ConstCx<'mir, 'tcx> { /// Returns `true` if this `DefId` points to one of the official `panic` lang items. pub fn is_lang_panic_fn(tcx: TyCtxt<'tcx>, def_id: DefId) -> bool { + // We can allow calls to these functions because `hook_panic_fn` in + // `const_eval/machine.rs` ensures the calls are handled specially. + // Keep in sync with what that function handles! Some(def_id) == tcx.lang_items().panic_fn() || Some(def_id) == tcx.lang_items().panic_str() || Some(def_id) == tcx.lang_items().begin_panic_fn() |