[LLVMdev] Problem using llvm::cl::bits class with gcc 4.7

[Delcypher]

Hi,

I'm currently working on the KLEE tool that uses LLVM (2.9 because that's
what KLEE currently uses) and in particular I'm having an unexpected
problem with the llvm::cl::bits class. I try something like this...

  enum testx
  {
  A,B
  };
  cl::bits<testx> queryLoggingOptions("option",cl::values(
       clEnumVal(A,"this is a"),
       clEnumVal(B,"this is b"),
       clEnumValEnd
    )

  );

And when I compile (gcc 4.7.1 20120721 (prerelease) ) I get an error like
this...

In file included from
/home/dan/documents/projects/project/klee/src/lib/Core/Executor.cpp:60:0:
/home/dan/documents/projects/project/llvm-2.9/src/include/llvm/Support/CommandLine.h:
In instantiation of ‘bool llvm::cl::bits<DataType, Storage,
ParserClass>::handleOccurrence(unsigned int, llvm::StringRef,
llvm::StringRef) [with DataType = {anonymous}::testx; Storage = bool;
ParserClass = llvm::cl::parser<{anonymous}::testx>]’:
/home/dan/documents/projects/project/klee/src/lib/Core/Executor.cpp:3448:1:
  required from here
/home/dan/documents/projects/project/llvm-2.9/src/include/llvm/Support/CommandLine.h:1220:5:
error: ‘addValue’ was not declared in this scope, and no declarations were
found by argument-dependent lookup at the point of instantiation
[-fpermissive]
/home/dan/documents/projects/project/llvm-2.9/src/include/llvm/Support/CommandLine.h:1220:5:
note: declarations in dependent base
‘llvm::cl::bits_storage<{anonymous}::testx, bool>’ are not found by
unqualified lookup
/home/dan/documents/projects/project/llvm-2.9/src/include/llvm/Support/CommandLine.h:1220:5:
note: use ‘this->addValue’ instead
/bin/rm: cannot remove
‘/home/dan/documents/projects/project/klee/bin-rel/lib/Core/Release+Asserts/Executor.d.tmp’:
No such file or directory

I think this is related to "Name Look up Change" in
http://gcc.gnu.org/gcc-4.7/porting_to.html . Indeed if I modify LLVM 2.9's
header file to use ``this->addValue()'' instead of ``addValue()'' I can
than successfully compile.

Is there anyway round this because I don't really want to have to patch
LLVM's header files specially for KLEE. I took a look at the latest LLVM
code (
https://github.com/llvm-mirror/llvm/blob/master/include/llvm/Support/CommandLine.h#1512
)
and the line that's causing me compile problems doesn't seem to have
changed. Does that mean that no one else has had the problem or am I doing
something very wrong?

Regards,
Dan Liew.
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