[llvm-bugs] [Bug 26362] New: clang 3.8.0.rc1 fails to build with gcc 4.8.1

[via llvm-bugs]

https://llvm.org/bugs/show_bug.cgi?id=26362

            Bug ID: 26362
           Summary: clang 3.8.0.rc1 fails to build with gcc 4.8.1
           Product: clang
           Version: 3.8
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: C++
          Assignee: unassignedclangbugs at nondot.org
          Reporter: sugak at fb.com
                CC: dgregor at apple.com, llvm-bugs at lists.llvm.org
    Classification: Unclassified

Created attachment 15744
  --> https://llvm.org/bugs/attachment.cgi?id=15744&action=edit
the error log

Checkout out llvm, clang, compiler-rt of 3.8.0.rc1 tag. Build with gcc 4.8.1:
```
% cmake -G Ninja -DCMAKE_BUILD_TYPE=Release -DLLVM_BUILD_TESTS=ON
-DLLVM_ENABLE_EH=ON-DLLVM_ENABLE_RTTI=ON -DLLVM_TARGETS_TO_BUILD="X86;BPF"
% ninja
```

A short snipped of the error:
```
In file included from
/home/sugak/llvm/src/llvm/tools/clang/lib/CodeGen/CGBuilder.h:14:0,
...
/home/sugak/llvm/src/src/llvm/tools/clang/lib/CodeGen/Address.h:111:31: error:
cannot allocate an object of abstract type 'llvm::object::ObjectFile'
   template <class U> inline U cast(clang::CodeGen::Address addr) {
                               ^
In file included from
/home/sugak/llvm/src/llvm/include/llvm/DebugInfo/DIContext.h:20:0,
...
/home/sugak/llvm/src/llvm/include/llvm/Object/ObjectFile.h:175:7: note:  
because the following virtual functions are pure within
'llvm::object::ObjectFile':
 class ObjectFile : public SymbolicFile {
       ^
In file included from
/home/sugak/llvm/src/llvm/include/llvm/Object/ObjectFile.h:18:0,
...
/home/sugak/llvm/src/llvm/include/llvm/Object/SymbolicFile.h:132:16: note:     
 virtual void
llvm::object::SymbolicFile::moveSymbolNext(llvm::object::DataRefImpl&) const
   virtual void moveSymbolNext(DataRefImpl &Symb) const = 0;
                ^
```
See attached files for the whole error message.

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