From cb0e24eafa233ddf5eee1937f161f3bda1745f2c Mon Sep 17 00:00:00 2001
From: Robin Kruppe <robin.kruppe@gmail.com>
Date: Sun, 27 Nov 2016 14:48:47 +0100
Subject: [PATCH] Adapt LLVMRustPrintPasses to LLVM 4.0 preferring `StringRef`
 over `char *`

---
 src/rustllvm/PassWrapper.cpp | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/rustllvm/PassWrapper.cpp b/src/rustllvm/PassWrapper.cpp
index 70f7ee3004d..9230c639833 100644
--- a/src/rustllvm/PassWrapper.cpp
+++ b/src/rustllvm/PassWrapper.cpp
@@ -529,10 +529,17 @@ LLVMRustPrintPasses() {
     LLVMInitializePasses();
     struct MyListener : PassRegistrationListener {
         void passEnumerate(const PassInfo *info) {
+#if LLVM_VERSION_GE(4, 0)
+            if (!info->getPassArgument().empty()) {
+                printf("%15s - %s\n", info->getPassArgument().data(),
+                       info->getPassName().data());
+            }
+#else
             if (info->getPassArgument() && *info->getPassArgument()) {
                 printf("%15s - %s\n", info->getPassArgument(),
                        info->getPassName());
             }
+#endif
         }
     } listener;