http://llvm.org/bugs/show_bug.cgi?id=15371
Bug ID: 15371
Summary: Behavior of "using" statement with template
inheritance does not work as expected and differs from
gcc.
Product: clang
Version: trunk
Hardware: PC
OS: FreeBSD
Status: NEW
Severity: normal
Priority: P
Component: C++
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected], [email protected]
Classification: Unclassified
Created attachment 10092
--> http://llvm.org/bugs/attachment.cgi?id=10092&action=edit
C++ file that shows the issue.
I have attached a file that compiles with GCC, but not clang. I'm not sure this
is a problem, but it's not the behavior I expected.
I don't expect to need "PACIFY_CLANG" defined because of the using statement,
and I'd expect that the gcc version would work again because of the using
statement at the beginning of Derived.
Below is the behavior I'm seeing:
LaptopBSD> /Storage/scratch/tools/bin/clang++ -v
clang version 3.3 (trunk 176074)
Target: x86_64-unknown-freebsd9.0
Thread model: posix
LaptopBSD> /Storage/scratch/tools/bin/clang++ -c test.cc
test.cc:38:13: error: out-of-line definition of 'Derived::get_ptr' differs from
the declaration in the return type
Derived<A>::get_ptr() const
^
test.cc:26:7: note: previous declaration is here
* get_ptr() const;
^
1 error generated.
LaptopBSD> /Storage/scratch/tools/bin/clang++ -DPACIFY_CLANG_ANGER_GCC=1 -c
test.cc
LaptopBSD> /Storage/scratch/tools/bin/clang++ -DPACIFY_CLANG=1 -c test.cc
LaptopBSD> /usr/local/bin/g++48 -DPACIFY_CLANG=1 -c test.cc
LaptopBSD> /usr/local/bin/g++48 -DPACIFY_CLANG_ANGER_GCC=1 -c test.cc
test.cc:38:1: error: prototype for 'const typename Derived<A>::Data*
Derived<A>::get_ptr() const' does not match any in class 'Derived<A>'
Derived<A>::get_ptr() const
^
test.cc:26:7: error: candidate is: const typename Base<A>::Data*
Derived<A>::get_ptr() const
* get_ptr() const;
^
LaptopBSD> /usr/local/bin/g++48 -v
Using built-in specs.
COLLECT_GCC=/usr/local/bin/g++48
COLLECT_LTO_WRAPPER=/usr/local/libexec/gcc48/gcc/x86_64-portbld-freebsd9.0/4.8.0/lto-wrapper
Target: x86_64-portbld-freebsd9.0
Configured with: ./../gcc-4.8-20130113/configure --disable-nls
--libdir=/usr/local/lib/gcc48 --libexecdir=/usr/local/libexec/gcc48
--program-suffix=48 --with-as=/usr/local/bin/as --with-gmp=/usr/local
--with-gxx-include-dir=/usr/local/lib/gcc48/include/c++/
--with-ld=/usr/local/bin/ld --with-libiconv-prefix=/usr/local
--with-pkgversion='FreeBSD Ports Collection' --with-system-zlib
--disable-libgcj --enable-languages=c,c++,objc,fortran --prefix=/usr/local
--mandir=/usr/local/man --infodir=/usr/local/info/gcc48
--build=x86_64-portbld-freebsd9.0
Thread model: posix
gcc version 4.8.0 20130113 (experimental) (FreeBSD Ports Collection)
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