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-rw-r--r--compiler/rustc_codegen_gcc/src/errors.rs4
1 files changed, 4 insertions, 0 deletions
diff --git a/compiler/rustc_codegen_gcc/src/errors.rs b/compiler/rustc_codegen_gcc/src/errors.rs
index 0aa16bd88b4..b252c39c0c0 100644
--- a/compiler/rustc_codegen_gcc/src/errors.rs
+++ b/compiler/rustc_codegen_gcc/src/errors.rs
@@ -19,3 +19,7 @@ pub(crate) struct CopyBitcode {
 pub(crate) struct LtoBitcodeFromRlib {
     pub gcc_err: String,
 }
+
+#[derive(Diagnostic)]
+#[diag(codegen_gcc_explicit_tail_calls_unsupported)]
+pub(crate) struct ExplicitTailCallsUnsupported;