From 1f0c1e922ff068912b5bc7e31a32def29e19141e Mon Sep 17 00:00:00 2001
From: Jacob Dufault <jacobdufault@gmail.com>
Date: Tue, 31 Oct 2017 15:43:27 -0700
Subject: [PATCH] Fix compile_commands.json parsing when filename is absolute.

Some compile_commands.json generators will emit absolute paths for the
filename, such as cmake.
---
 src/project.cc | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/project.cc b/src/project.cc
index 26bcc462..86c06faf 100644
--- a/src/project.cc
+++ b/src/project.cc
@@ -272,7 +272,11 @@ std::vector<Project::Entry> LoadCompilationEntriesFromDirectory(
     clang_time.Pause();  // TODO: don't call clang::ToString in this block.
 
     our_time.Resume();
-    std::string absolute_filename = directory + "/" + relative_filename;
+    std::string absolute_filename;
+    if (!relative_filename.empty() && relative_filename[0] == '/')
+      absolute_filename = relative_filename;
+    else
+      absolute_filename = directory + "/" + relative_filename;
     entry.file = NormalizePathWithTestOptOut(absolute_filename);
     entry.directory = directory;