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-rw-r--r--compiler/rustc_codegen_llvm/src/llvm/ffi.rs2
1 files changed, 1 insertions, 1 deletions
diff --git a/compiler/rustc_codegen_llvm/src/llvm/ffi.rs b/compiler/rustc_codegen_llvm/src/llvm/ffi.rs
index 8b1dcea3fa2..54ef1a28468 100644
--- a/compiler/rustc_codegen_llvm/src/llvm/ffi.rs
+++ b/compiler/rustc_codegen_llvm/src/llvm/ffi.rs
@@ -2038,7 +2038,7 @@ extern "C" {
 
     pub fn LLVMRustDIBuilderCreateUnionType(
         Builder: &DIBuilder<'a>,
-        Scope: &'a DIScope,
+        Scope: Option<&'a DIScope>,
         Name: *const c_char,
         NameLen: size_t,
         File: &'a DIFile,