[PATCH] D14727: [Driver] Adapt Linux::GCCVersion::Parse to match GCC 5 installations

[Thiago Macieira via cfe-commits]

thiagomacieira created this revision.
thiagomacieira added a reviewer: cfe-commits.

Some GCC 5 installations store the libstdc++ includes and GCC-specific files in paths without 
the minor part of the version number, such as

  /usr/include/c++/5
  /usr/lib64/gcc/x86_64-suse-linux/5

http://reviews.llvm.org/D14727

Files:
  lib/Driver/ToolChains.cpp

Index: lib/Driver/ToolChains.cpp
===================================================================
--- lib/Driver/ToolChains.cpp
+++ lib/Driver/ToolChains.cpp
@@ -1231,13 +1231,12 @@
   if (First.first.getAsInteger(10, GoodVersion.Major) || GoodVersion.Major < 0)
     return BadVersion;
   GoodVersion.MajorStr = First.first.str();
-  if (Second.first.getAsInteger(10, GoodVersion.Minor) || GoodVersion.Minor < 0)
-    return BadVersion;
   GoodVersion.MinorStr = Second.first.str();
 
   // First look for a number prefix and parse that if present. Otherwise just
   // stash the entire patch string in the suffix, and leave the number
   // unspecified. This covers versions strings such as:
+  //   5
   //   4.4
   //   4.4.0
   //   4.4.x


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