[PATCH] D17784: Check if LLVM_PREFIX is defined before using it.

Chaoren Lin via cfe-commits cfe-commits at lists.llvm.org
Tue Mar 1 15:00:02 PST 2016

chaoren created this revision.
chaoren added reviewers: kparzysz, bkramer.
chaoren added a subscriber: cfe-commits.

LLVM_PREFIX could be undefined if CMAKE_INSTALL_PREFIX were set to empty.



Index: lib/Driver/ToolChains.cpp
--- lib/Driver/ToolChains.cpp
+++ lib/Driver/ToolChains.cpp
@@ -2607,9 +2607,11 @@
   if (getVFS().exists(InstallRelDir = InstalledDir + "/../target"))
     return InstallRelDir;
   std::string PrefixRelDir = std::string(LLVM_PREFIX) + "/target";
   if (getVFS().exists(PrefixRelDir))
     return PrefixRelDir;
   return InstallRelDir;

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