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-rw-r--r--compiler/rustc_session/src/options.rs2
1 files changed, 2 insertions, 0 deletions
diff --git a/compiler/rustc_session/src/options.rs b/compiler/rustc_session/src/options.rs
index ad36fa76986..f31e0431d0d 100644
--- a/compiler/rustc_session/src/options.rs
+++ b/compiler/rustc_session/src/options.rs
@@ -907,6 +907,8 @@ options! {DebuggingOptions, DebuggingSetter, basic_debugging_options,
         "force all crates to be `rustc_private` unstable (default: no)"),
     fuel: Option<(String, u64)> = (None, parse_optimization_fuel, [TRACKED],
         "set the optimization fuel quota for a crate"),
+    graphviz_dark_mode: bool = (false, parse_bool, [UNTRACKED],
+        "use dark-themed colors in graphviz output (default: no)"),
     hir_stats: bool = (false, parse_bool, [UNTRACKED],
         "print some statistics about AST and HIR (default: no)"),
     human_readable_cgu_names: bool = (false, parse_bool, [TRACKED],