commit bda20e78f0f314dbbf0f0bbcf0740cf2d6a4b85e
author Dimitry Ivanov <dimitry@google.com> Tue May 24 14:29:56 2016 -0700
committer Dimitry Ivanov <dimitry@google.com> Tue May 24 16:13:56 2016 -0700
tree 5381299da8a347074a172734d2839070918be9f1
parent f1d4a4959880eaf0f9c789c43c1bae383a605d9f

Correctly handle the case of empty LD_PRELOAD entries

Previous android versions ignored empty entries for LD_PRELOAD

Bug: http://b/28936779
Change-Id: I757478fe0c604ee378186511cb13b757fd9a9864
(cherry picked from commit d799b2bb7e9335786ab4596757d871e4a7722ff0)

linker/linker.cpp

diff --git a/linker/linker.cpp b/linker/linker.cpp
index 9836210..39aa2ca 100644
--- a/linker/linker.cpp
+++ b/linker/linker.cpp
@@ -543,6 +543,9 @@
   if (path != nullptr) {
     // We have historically supported ':' as well as ' ' in LD_PRELOAD.
     g_ld_preload_names = android::base::Split(path, " :");
+    std::remove_if(g_ld_preload_names.begin(),
+                   g_ld_preload_names.end(),
+                   [] (const std::string& s) { return s.empty(); });
   }
 }