From dd33b145f3ec0806adec2ca5c9cfb5ccf297bd34 Mon Sep 17 00:00:00 2001
From: Alex Crichton <alex@alexcrichton.com>
Date: Wed, 1 Jan 2014 13:03:26 -0800
Subject: [PATCH] Fix usage of rustc --ls on invalid files

Closes #11259
---
 src/librustc/lib/llvm.rs               | 2 +-
 src/test/run-make/ls-metadata/Makefile | 7 +++++++
 src/test/run-make/ls-metadata/foo.rs   | 1 +
 3 files changed, 9 insertions(+), 1 deletion(-)
 create mode 100644 src/test/run-make/ls-metadata/Makefile
 create mode 100644 src/test/run-make/ls-metadata/foo.rs

diff --git a/src/librustc/lib/llvm.rs b/src/librustc/lib/llvm.rs
index 0639526ffdb6e..f8d2edefd3684 100644
--- a/src/librustc/lib/llvm.rs
+++ b/src/librustc/lib/llvm.rs
@@ -1936,7 +1936,7 @@ impl ObjectFile {
         unsafe {
             let llof = llvm::LLVMCreateObjectFile(llmb);
             if llof as int == 0 {
-                llvm::LLVMDisposeMemoryBuffer(llmb);
+                // LLVMCreateObjectFile took ownership of llmb
                 return None
             }
 
diff --git a/src/test/run-make/ls-metadata/Makefile b/src/test/run-make/ls-metadata/Makefile
new file mode 100644
index 0000000000000..b568809156bfb
--- /dev/null
+++ b/src/test/run-make/ls-metadata/Makefile
@@ -0,0 +1,7 @@
+-include ../tools.mk
+
+all:
+	$(RUSTC) foo.rs
+	$(RUSTC) --ls $(TMPDIR)/foo
+	touch $(TMPDIR)/bar
+	$(RUSTC) --ls $(TMPDIR)/bar
diff --git a/src/test/run-make/ls-metadata/foo.rs b/src/test/run-make/ls-metadata/foo.rs
new file mode 100644
index 0000000000000..f328e4d9d04c3
--- /dev/null
+++ b/src/test/run-make/ls-metadata/foo.rs
@@ -0,0 +1 @@
+fn main() {}