From: Lang Hames <lhames@gmail.com>
Date: Tue, 22 Jul 2014 23:07:52 +0000 (+0000)
Subject: [MCJIT] Improve stub_addr file-not-found diagnostic to help track down a
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=fa8abbd9be84225b8bf5e29d625bc04c6db14783;p=oota-llvm.git

[MCJIT] Improve stub_addr file-not-found diagnostic to help track down a
buildbot failure.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@213701 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldChecker.cpp b/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldChecker.cpp
index 3ac4dd6b4f0..72075f5202e 100644
--- a/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldChecker.cpp
+++ b/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldChecker.cpp
@@ -713,8 +713,23 @@ std::pair<uint64_t, std::string> RuntimeDyldCheckerImpl::getStubAddrFor(
     bool IsInsideLoad) const {
 
   auto SI1 = Stubs.find(FileName);
-  if (SI1 == Stubs.end())
-    return std::make_pair(0, ("File '" + FileName + "' not found.\n").str());
+  if (SI1 == Stubs.end()) {
+    std::string ErrorMsg = "File '";
+    ErrorMsg += FileName;
+    ErrorMsg += "' not found. ";
+    if (Stubs.empty())
+      ErrorMsg += "No stubs registered.";
+    else {
+      ErrorMsg += "Available files are:";
+      for (const auto& StubEntry : Stubs) {
+        ErrorMsg += " '";
+        ErrorMsg += StubEntry.first;
+        ErrorMsg += "'";
+      }
+    }
+    ErrorMsg += "\n";
+    return std::make_pair(0, ErrorMsg);
+  }
 
   const SectionStubMap &SectionStubs = SI1->second;
   auto SI2 = SectionStubs.find(SectionName);