Make failed_to_produce_diagnostic non-fatal

hamishknight · hamishknight · commit a554080a82f4 · 2025-08-19T17:14:05.000+01:00
diff --git a/include/swift/AST/DiagnosticsSema.def b/include/swift/AST/DiagnosticsSema.def
@@ -4753,7 +4753,7 @@ NOTE(note_in_opening_pack_element,none,
 ERROR(type_of_expression_is_ambiguous,none,
       "type of expression is ambiguous without a type annotation", ())
 
-ERROR(failed_to_produce_diagnostic,Fatal,
+ERROR(failed_to_produce_diagnostic,none,
       "failed to produce diagnostic for expression; "
       SWIFT_BUG_REPORT_MESSAGE, ())
 
