unsupported_calling_conventions: print which ABI this is about

RalfJung · workingjubilee · commit 9ed20adffd5c · 2025-06-22T18:48:45.000-07:00
diff --git a/compiler/rustc_hir_analysis/src/check/check.rs b/compiler/rustc_hir_analysis/src/check/check.rs
@@ -64,7 +64,9 @@ pub fn check_abi(tcx: TyCtxt<'_>, hir_id: hir::HirId, span: Span, abi: ExternAbi
         }
         AbiMapping::Deprecated(..) => {
             tcx.node_span_lint(UNSUPPORTED_CALLING_CONVENTIONS, hir_id, span, |lint| {
-                lint.primary_message("use of calling convention not supported on this target");
+                lint.primary_message(format!(
+                    "{abi} is not a supported ABI for the current target"
+                ));
                 add_abi_diag_help(abi, lint);
             });
         }

Original file line number	Diff line number	Diff line change
`@@ -64,7 +64,9 @@ pub fn check_abi(tcx: TyCtxt<'_>, hir_id: hir::HirId, span: Span, abi: ExternAbi`
`64`	`64`	`}`
`65`	`65`	`AbiMapping::Deprecated(..) => {`
`66`	`66`	`tcx.node_span_lint(UNSUPPORTED_CALLING_CONVENTIONS, hir_id, span, \|lint\| {`
`67`		`- lint.primary_message("use of calling convention not supported on this target");`
	`67`	`+ lint.primary_message(format!(`
	`68`	`+ "{abi} is not a supported ABI for the current target"`
	`69`	`+ ));`
`68`	`70`	`add_abi_diag_help(abi, lint);`
`69`	`71`	`});`
`70`	`72`	`}`