r284403 - [Driver] Use VFS to perform all distribution checks

[Michal Gorny via cfe-commits]

Author: mgorny
Date: Mon Oct 17 13:07:15 2016
New Revision: 284403

URL: http://llvm.org/viewvc/llvm-project?rev=284403&view=rev
Log:
[Driver] Use VFS to perform all distribution checks

Use the VFS provided by D.getVFS() for all distribution checks,
including those performing read of the release file. Requested
by @bruno on D24954.

Differential Revision: https://reviews.llvm.org/D25641

Modified:
    cfe/trunk/lib/Driver/ToolChains.cpp

Modified: cfe/trunk/lib/Driver/ToolChains.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Driver/ToolChains.cpp?rev=284403&r1=284402&r2=284403&view=diff
==============================================================================
--- cfe/trunk/lib/Driver/ToolChains.cpp (original)
+++ cfe/trunk/lib/Driver/ToolChains.cpp Mon Oct 17 13:07:15 2016
@@ -3844,7 +3844,7 @@ static bool IsUbuntu(enum Distro Distro)
 
 static Distro DetectDistro(const Driver &D, llvm::Triple::ArchType Arch) {
   llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> File =
-      llvm::MemoryBuffer::getFile("/etc/lsb-release");
+      D.getVFS().getBufferForFile("/etc/lsb-release");
   if (File) {
     StringRef Data = File.get()->getBuffer();
     SmallVector<StringRef, 16> Lines;
@@ -3876,7 +3876,7 @@ static Distro DetectDistro(const Driver
       return Version;
   }
 
-  File = llvm::MemoryBuffer::getFile("/etc/redhat-release");
+  File = D.getVFS().getBufferForFile("/etc/redhat-release");
   if (File) {
     StringRef Data = File.get()->getBuffer();
     if (Data.startswith("Fedora release"))
@@ -3894,7 +3894,7 @@ static Distro DetectDistro(const Driver
     return UnknownDistro;
   }
 
-  File = llvm::MemoryBuffer::getFile("/etc/debian_version");
+  File = D.getVFS().getBufferForFile("/etc/debian_version");
   if (File) {
     StringRef Data = File.get()->getBuffer();
     if (Data[0] == '5')