[llvm] r289454 - Fix compile with GCC 5 or later

[Dimitry Andric via llvm-commits]

Author: dim
Date: Mon Dec 12 13:05:52 2016
New Revision: 289454

URL: http://llvm.org/viewvc/llvm-project?rev=289454&view=rev
Log:
Fix compile with GCC 5 or later

Summary:

Compiling with GCC 5 or later can fail with a bogus error "constructor
required before non-static data member for
llvm::ValueEnumerator::MDRange::First has been parsed".

This was originally fixed upstream in GCC PR 70528, but later this fix
was reverted, and released versions of GCC still show the bogus error.

To work around this, replace MDRange's declaration of a default
constructor with a definition.

Reviewers: dexonsmith, rsmith, rivanvx

Subscribers: llvm-commits, dim, dexonsmith

Differential Revision: https://reviews.llvm.org/D18730

Modified:
    llvm/trunk/lib/Bitcode/Writer/ValueEnumerator.h

Modified: llvm/trunk/lib/Bitcode/Writer/ValueEnumerator.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Bitcode/Writer/ValueEnumerator.h?rev=289454&r1=289453&r2=289454&view=diff
==============================================================================
--- llvm/trunk/lib/Bitcode/Writer/ValueEnumerator.h (original)
+++ llvm/trunk/lib/Bitcode/Writer/ValueEnumerator.h Mon Dec 12 13:05:52 2016
@@ -95,7 +95,7 @@ private:
     /// Number of strings in the prefix of the metadata range.
     unsigned NumStrings = 0;
 
-    MDRange() = default;
+    MDRange() {}
     explicit MDRange(unsigned First) : First(First) {}
   };
   SmallDenseMap<unsigned, MDRange, 1> FunctionMDInfo;