[LLVMbugs] [Bug 12154] New: Passing a lambda from inside a function template to a method template of a class template does not compile

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=12154

             Bug #: 12154
           Summary: Passing a lambda from inside a function template to a
                    method template of a class template does not compile
           Product: clang
           Version: trunk
          Platform: Macintosh
        OS/Version: MacOS X
            Status: NEW
          Severity: normal
          Priority: P
         Component: C++0x
        AssignedTo: unassignedclangbugs at nondot.org
        ReportedBy: jonathan.sauer at gmx.de
                CC: dgregor at apple.com, llvmbugs at cs.uiuc.edu
    Classification: Unclassified


The following program fails to compile with clang r151811:

template <typename T, typename S>
static T bar(S s)
{
  template s.foo<T>([]() -> bool { return true; });
}


This results in:

$ $ ~/LLVM/build/Release+Asserts/bin/clang++ -std=c++0x -v clang.cpp 
clang version 3.1 (trunk 151811)
Target: x86_64-apple-darwin10.8.0
Thread model: posix
[...]
clang.cpp:4:2: error: expected expression
        template s.foo<T>([]() -> bool { return true; });
        ^
1 error generated.


Turning the call to <s.foo> into a non-dependent name like this:

  s.foo([]() -> bool { return true; });

results in a successful compile.

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