For PR797:
Eliminate exception throwing from Path::renamePathOnDisk and adjust its
users correspondingly.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29843 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/llvm-ld/llvm-ld.cpp b/tools/llvm-ld/llvm-ld.cpp
index 53f04e6..6b9adaf 100644
--- a/tools/llvm-ld/llvm-ld.cpp
+++ b/tools/llvm-ld/llvm-ld.cpp
@@ -505,7 +505,10 @@
             if (tmp_output.isBytecodeFile()) {
               sys::Path target(RealBytecodeOutput);
               target.eraseFromDisk();
-              tmp_output.renamePathOnDisk(target);
+              if (tmp_output.renamePathOnDisk(target, &ErrMsg)) {
+                std::cerr << argv[0] << ": " << ErrMsg << "\n";
+                return 2;
+              }
             } else
               return PrintAndReturn(
                 "Post-link optimization output is not bytecode");