[Bug c++/61149] New: g++ rejects invocation of protected base class function from lambda

["jengelh at inai dot de" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=61149

            Bug ID: 61149
           Summary: g++ rejects invocation of protected base class
                    function from lambda
           Product: gcc
           Version: 4.9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: jengelh at inai dot de

gcc-4.9.0 SVN r209782 and gcc 4.8.2 reject this code:

    class B { protected: void foo(void) {}; };
    class S : public B {
        public: S(void) { [this](void) { B::foo(); }(); };
    };


$ g++ -c q.cpp -std=gnu++11
q.cpp: In lambda function:
q.cpp:4:7: error: âvoid B::foo()â is protected
  void foo(void) {};
       ^
q.cpp:9:25: error: within this context
   [this](void) { B::foo(); }();

                         ^
$ g++ -v
Using built-in specs.
COLLECT_GCC=g++
COLLECT_LTO_WRAPPER=/usr/lib64/gcc/x86_64-suse-linux/4.8/lto-wrapper
Target: x86_64-suse-linux
Configured with: ../configure --prefix=/usr --infodir=/usr/share/info
--mandir=/usr/share/man --libdir=/usr/lib64 --libexecdir=/usr/lib64
--enable-languages=c,c++,objc,fortran,obj-c++,java,ada
--enable-checking=release --with-gxx-include-dir=/usr/include/c++/4.8
--enable-ssp --disable-libssp --disable-plugin
--with-bugurl=http://bugs.opensuse.org/ --with-pkgversion='SUSE Linux'
--disable-libgcj --disable-libmudflap --with-slibdir=/lib64 --with-system-zlib
--enable-__cxa_atexit --enable-libstdcxx-allocator=new --disable-libstdcxx-pch
--enable-version-specific-runtime-libs --enable-linker-build-id
--enable-linux-futex --program-suffix=-4.8 --without-system-libunwind
--with-arch-32=i586 --with-tune=generic --build=x86_64-suse-linux
--host=x86_64-suse-linux
Thread model: posix
gcc version 4.8.2 20140404 [gcc-4_8-branch revision 209122] (SUSE Linux) 


clang is fine with it:

$ clang++ -c q.cpp -std=gnu++11
$ clang++ -v
clang version 3.3 (branches/release_33 183898)
Target: x86_64-suse-linux
Thread model: posix