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-rw-r--r--src/bootstrap/doc.rs1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/bootstrap/doc.rs b/src/bootstrap/doc.rs
index a32b92ef1af..e42d4fcd864 100644
--- a/src/bootstrap/doc.rs
+++ b/src/bootstrap/doc.rs
@@ -549,6 +549,7 @@ impl Step for Rustc {
         cargo.rustdocflag("--enable-index-page");
         cargo.rustdocflag("-Zunstable-options");
         cargo.rustdocflag("-Znormalize-docs");
+        cargo.rustdocflag("--show-type-layout");
         compile::rustc_cargo(builder, &mut cargo, target);
 
         // Only include compiler crates, no dependencies of those, such as `libc`.