From dcdb9ad3d27aca6185af64f2e0318ed47860c6c0 Mon Sep 17 00:00:00 2001
From: Augie Fackler <augie@google.com>
Date: Tue, 16 Mar 2021 16:32:00 -0400
Subject: llvm-wrapper: pass std::string instead of StringRef

LLVM change 5fbd1a333aa1a0b70903d036b98ea56c51ae5224 modified this
function to want std::string instead of StringRef, which is easily done.
---
 compiler/rustc_llvm/llvm-wrapper/CoverageMappingWrapper.cpp | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'compiler/rustc_llvm/llvm-wrapper/CoverageMappingWrapper.cpp')

diff --git a/compiler/rustc_llvm/llvm-wrapper/CoverageMappingWrapper.cpp b/compiler/rustc_llvm/llvm-wrapper/CoverageMappingWrapper.cpp
index e97d96e3a4e..67074685cf6 100644
--- a/compiler/rustc_llvm/llvm-wrapper/CoverageMappingWrapper.cpp
+++ b/compiler/rustc_llvm/llvm-wrapper/CoverageMappingWrapper.cpp
@@ -23,10 +23,17 @@ extern "C" void LLVMRustCoverageWriteFilenamesSectionToBuffer(
     const char* const Filenames[],
     size_t FilenamesLen,
     RustStringRef BufferOut) {
+#if LLVM_VERSION_GE(12,0)
+  SmallVector<std::string,32> FilenameRefs;
+  for (size_t i = 0; i < FilenamesLen; i++) {
+    FilenameRefs.push_back(std::string(Filenames[i]));
+  }
+#else
   SmallVector<StringRef,32> FilenameRefs;
   for (size_t i = 0; i < FilenamesLen; i++) {
     FilenameRefs.push_back(StringRef(Filenames[i]));
   }
+#endif
   auto FilenamesWriter = coverage::CoverageFilenamesSectionWriter(
     makeArrayRef(FilenameRefs));
   RawRustStringOstream OS(BufferOut);
-- 
cgit 1.4.1-3-g733a5