On 08/22/2013 06:17 PM, Andrew Sutton wrote:
Sorry for the duplicate send. GMail is misbehaving and caused the
message to bounce from the gcc-help list. I thought I'd resend it.
I did see this. In fact, I have --disable-libsanitizer in my
configuration. So I haven't seen it in a while :/
I figured there was a core c++ change that wasn't compatible with that
library and it would be fixed in time. I actually spent a little time
debugging it and concluded that must have been outside my set of
changes. I think this bug report helped me confirm that:
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45253
It's possible that I'm reusing a field (say DECL_SIZE_UNIT) that is
used with bitfield decls in templates, but I couldn't find any
evidence supporting that.
I'm not sure what a good resolution would be here.
Andrew
On Thu, Aug 22, 2013 at 6:11 PM, Andrew Sutton
<andrew.n.sutton@xxxxxxxxx> wrote:
I did see this. In fact, I have --disable-libsanitizer in my configuration.
So I haven't seen it in a while :/
I figured there was a core c++ change that wasn't compatible with that
library and it would be fixed in time. I actually spent a little time
debugging it and concluded that must have been outside my set of changes. I
think this bug report helped me confirm that:
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45253
It's possible that I'm reusing a field (say DECL_SIZE_UNIT) that is used
with bitfield decls in templates, but I couldn't find any evidence
supporting that.
I'm not sure what a good resolution would be here.
Andrew
On Thu, Aug 22, 2013 at 5:50 PM, Gabriel Dos Reis
<gdr@xxxxxxxxxxxxxxxxxxxxxxxx> wrote:
Andrew -- are you seeing this too?
-- Gaby
On Thu, Aug 22, 2013 at 10:45 AM, Ed Smith-Rowland <3dw4rd@xxxxxxxxxxx>
wrote:
I checked out a brand new copy of the c++-concepts branch and tried to
build.
The build breaks in stage1 while trying to build libasan:
-----------------------------------------------------------------------------------------------------------
make[4]: Leaving directory
`/home/ed/obj_concepts/x86_64-unknown-linux-gnu/libsanitizer/sanitizer_common'
Making all in asan
make[4]: Entering directory
`/home/ed/obj_concepts/x86_64-unknown-linux-gnu/libsanitizer/asan'
/bin/bash ../libtool --tag=CXX --mode=compile
/home/ed/obj_concepts/./gcc/xgcc -shared-libgcc
-B/home/ed/obj_concepts/./gcc -nostdinc++
-L/home/ed/obj_concepts/x86_64-unknown-linux-gnu/libstdc++-v3/src
-L/home/ed/obj_concepts/x86_64-unknown-linux-gnu/libstdc++-v3/src/.libs
-B/home/ed/bin_concepts/x86_64-unknown-linux-gnu/bin/
-B/home/ed/bin_concepts/x86_64-unknown-linux-gnu/lib/ -isystem
/home/ed/bin_concepts/x86_64-unknown-linux-gnu/include -isystem
/home/ed/bin_concepts/x86_64-unknown-linux-gnu/sys-include -D_GNU_SOURCE
-D_DEBUG -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS
-D__STDC_LIMIT_MACROS -DASAN_HAS_EXCEPTIONS=1
-DASAN_FLEXIBLE_MAPPING_AND_OFFSET=0 -DASAN_NEEDS_SEGV=1 -I.
-I../../../../gcc_concepts/libsanitizer/asan -I
../../../../gcc_concepts/libsanitizer/include -I
../../../../gcc_concepts/libsanitizer -Wall -W -Wno-unused-parameter
-Wwrite-strings -pedantic -Wno-long-long -fPIC -fno-builtin
-fno-exceptions
-fomit-frame-pointer -funwind-tables -fvisibility=hidden
-Wno-variadic-macros -I../../libstdc++-v3/include
-I../../libstdc++-v3/include/x86_64-unknown-linux-gnu
-I../../../../gcc_concepts/libsanitizer/../libstdc++-v3/libsupc++ -g -O2
-D_GNU_SOURCE -MT asan_allocator2.lo -MD -MP -MF
.deps/asan_allocator2.Tpo
-c -o asan_allocator2.lo
../../../../gcc_concepts/libsanitizer/asan/asan_allocator2.cc
libtool: compile: /home/ed/obj_concepts/./gcc/xgcc -shared-libgcc
-B/home/ed/obj_concepts/./gcc -nostdinc++
-L/home/ed/obj_concepts/x86_64-unknown-linux-gnu/libstdc++-v3/src
-L/home/ed/obj_concepts/x86_64-unknown-linux-gnu/libstdc++-v3/src/.libs
-B/home/ed/bin_concepts/x86_64-unknown-linux-gnu/bin/
-B/home/ed/bin_concepts/x86_64-unknown-linux-gnu/lib/ -isystem
/home/ed/bin_concepts/x86_64-unknown-linux-gnu/include -isystem
/home/ed/bin_concepts/x86_64-unknown-linux-gnu/sys-include -D_GNU_SOURCE
-D_DEBUG -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS
-D__STDC_LIMIT_MACROS -DASAN_HAS_EXCEPTIONS=1
-DASAN_FLEXIBLE_MAPPING_AND_OFFSET=0 -DASAN_NEEDS_SEGV=1 -I.
-I../../../../gcc_concepts/libsanitizer/asan -I
../../../../gcc_concepts/libsanitizer/include -I
../../../../gcc_concepts/libsanitizer -Wall -W -Wno-unused-parameter
-Wwrite-strings -pedantic -Wno-long-long -fPIC -fno-builtin
-fno-exceptions
-fomit-frame-pointer -funwind-tables -fvisibility=hidden
-Wno-variadic-macros -I../../libstdc++-v3/include
-I../../libstdc++-v3/include/x86_64-unknown-linux-gnu
-I../../../../gcc_concepts/libsanitizer/../libstdc++-v3/libsupc++ -g -O2
-D_GNU_SOURCE -MT asan_allocator2.lo -MD -MP -MF
.deps/asan_allocator2.Tpo
-c ../../../../gcc_concepts/libsanitizer/asan/asan_allocator2.cc -fPIC
-DPIC
-o .libs/asan_allocator2.o
In file included from
../../../../gcc_concepts/libsanitizer/asan/asan_flags.h:16:0,
from ../../../../gcc_concepts/libsanitizer/asan/asan_internal.h:15,
from ../../../../gcc_concepts/libsanitizer/asan/asan_allocator.h:16,
from ../../../../gcc_concepts/libsanitizer/asan/asan_allocator2.cc:16:
../../../../gcc_concepts/libsanitizer/asan/asan_allocator2.cc: In member
function ‘void __asan::QuarantineCallback::Recycle(__asan::AsanChunk*)’:
../../../../gcc_concepts/libsanitizer/asan/asan_allocator2.cc:262:17:
error:
cannot bind bitfield
‘m->__asan::AsanChunk::<anonymous>.__asan::ChunkBase::<anonymous>.__asan::ChunkHeader::alloc_tid’
to ‘__sanitizer::u32& {aka unsigned int&}’
CHECK_NE(m->alloc_tid, kInvalidTid);
^
../../../../gcc_concepts/libsanitizer/sanitizer_common/sanitizer_internal_defs.h:174:33:
note: in definition of macro ‘CHECK_IMPL’
__sanitizer::u64 v1 = (u64)(c1); \
^
../../../../gcc_concepts/libsanitizer/asan/asan_allocator2.cc:262:5:
note:
in expansion of macro ‘CHECK_NE’
CHECK_NE(m->alloc_tid, kInvalidTid);
^
../../../../gcc_concepts/libsanitizer/asan/asan_allocator2.cc:263:17:
error:
cannot bind bitfield
‘m->__asan::AsanChunk::<anonymous>.__asan::ChunkBase::<anonymous>.__asan::ChunkHeader::free_tid’
to ‘__sanitizer::u32& {aka unsigned int&}’
CHECK_NE(m->free_tid, kInvalidTid);
^
../../../../gcc_concepts/libsanitizer/sanitizer_common/sanitizer_internal_defs.h:174:33:
note: in definition of macro ‘CHECK_IMPL’
__sanitizer::u64 v1 = (u64)(c1); \
^
../../../../gcc_concepts/libsanitizer/asan/asan_allocator2.cc:263:5:
note:
in expansion of macro ‘CHECK_NE’
CHECK_NE(m->free_tid, kInvalidTid);
^
../../../../gcc_concepts/libsanitizer/asan/asan_allocator2.cc: In
function
‘void* __asan::Allocate(__sanitizer::uptr, __sanitizer::uptr,
__sanitizer::StackTrace*, __asan::AllocType)’:
../../../../gcc_concepts/libsanitizer/asan/asan_allocator2.cc:364:26:
error:
cannot bind bitfield
‘m->__asan::AsanChunk::<anonymous>.__asan::ChunkBase::<anonymous>.__asan::ChunkHeader::alloc_tid’
to ‘__sanitizer::u32& {aka unsigned int&}’
CHECK_EQ(alloc_tid, m->alloc_tid); // Does alloc_tid fit into the
bitfield?
^
../../../../gcc_concepts/libsanitizer/sanitizer_common/sanitizer_internal_defs.h:175:33:
note: in definition of macro ‘CHECK_IMPL’
__sanitizer::u64 v2 = (u64)(c2); \
^
../../../../gcc_concepts/libsanitizer/asan/asan_allocator2.cc:364:3:
note:
in expansion of macro ‘CHECK_EQ’
CHECK_EQ(alloc_tid, m->alloc_tid); // Does alloc_tid fit into the
bitfield?
^
../../../../gcc_concepts/libsanitizer/asan/asan_allocator2.cc: In
function
‘void __asan::Deallocate(void*, __sanitizer::StackTrace*,
__asan::AllocType)’:
../../../../gcc_concepts/libsanitizer/asan/asan_allocator2.cc:436:15:
error:
cannot bind bitfield
‘m->__asan::AsanChunk::<anonymous>.__asan::ChunkBase::<anonymous>.__asan::ChunkHeader::alloc_tid’
to ‘__sanitizer::u32& {aka unsigned int&}’
CHECK_GE(m->alloc_tid, 0);
^
../../../../gcc_concepts/libsanitizer/sanitizer_common/sanitizer_internal_defs.h:174:33:
note: in definition of macro ‘CHECK_IMPL’
__sanitizer::u64 v1 = (u64)(c1); \
^
../../../../gcc_concepts/libsanitizer/asan/asan_allocator2.cc:436:3:
note:
in expansion of macro ‘CHECK_GE’
CHECK_GE(m->alloc_tid, 0);
^
../../../../gcc_concepts/libsanitizer/asan/asan_allocator2.cc:438:17:
error:
cannot bind bitfield
‘m->__asan::AsanChunk::<anonymous>.__asan::ChunkBase::<anonymous>.__asan::ChunkHeader::free_tid’
to ‘__sanitizer::u32& {aka unsigned int&}’
CHECK_EQ(m->free_tid, kInvalidTid);
^
../../../../gcc_concepts/libsanitizer/sanitizer_common/sanitizer_internal_defs.h:174:33:
note: in definition of macro ‘CHECK_IMPL’
__sanitizer::u64 v1 = (u64)(c1); \
^
../../../../gcc_concepts/libsanitizer/asan/asan_allocator2.cc:438:5:
note:
in expansion of macro ‘CHECK_EQ’
CHECK_EQ(m->free_tid, kInvalidTid);
^
../../../../gcc_concepts/libsanitizer/asan/asan_allocator2.cc: In
function
‘__asan::AsanChunk* __asan::GetAsanChunkByAddr(__sanitizer::uptr)’:
../../../../gcc_concepts/libsanitizer/asan/asan_allocator2.cc:500:14:
error:
cannot bind bitfield
‘m->__asan::AsanChunk::<anonymous>.__asan::ChunkBase::<anonymous>.__asan::ChunkHeader::from_memalign’
to ‘__sanitizer::u32& {aka unsigned int&}’
CHECK(m->from_memalign);
^
../../../../gcc_concepts/libsanitizer/sanitizer_common/sanitizer_internal_defs.h:174:33:
note: in definition of macro ‘CHECK_IMPL’
__sanitizer::u64 v1 = (u64)(c1); \
^
../../../../gcc_concepts/libsanitizer/asan/asan_allocator2.cc:500:5:
note:
in expansion of macro ‘CHECK’
CHECK(m->from_memalign);
^
make[4]: *** [asan_allocator2.lo] Error 1
make[4]: Leaving directory
`/home/ed/obj_concepts/x86_64-unknown-linux-gnu/libsanitizer/asan'
make[3]: *** [all-recursive] Error 1
make[3]: Leaving directory
`/home/ed/obj_concepts/x86_64-unknown-linux-gnu/libsanitizer'
make[2]: *** [all-stage1-target-libsanitizer] Error 2
make[2]: Leaving directory `/home/ed/obj_concepts'
make[1]: *** [stage1-bubble] Error 2
make[1]: Leaving directory `/home/ed/obj_concepts'
make: *** [bootstrap] Error 2
-----------------------------------------------------------------------------------------------------------
Any ideas?
I'm not having trouble building building trunk at all.
Could this be *Bug 57644*
<http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57644> -[C++1y] Cannot bind
bitfield to lvalue reference? The default compiler for concepts branch
is
c++1y.
I'm on x86_64 linux. The system compiler is stock (for ubuntu 13.4
Raring):
ed@bad-horse:~/obj_concepts$ g++ -v
Using built-in specs.
COLLECT_GCC=g++
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/4.7/lto-wrapper
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Ubuntu/Linaro
4.7.3-1ubuntu1' --with-bugurl=file:///usr/share/doc/gcc-4.7/README.Bugs
--enable-languages=c,c++,go,fortran,objc,obj-c++ --prefix=/usr
--program-suffix=-4.7 --enable-shared --enable-linker-build-id
--libexecdir=/usr/lib --without-included-gettext --enable-threads=posix
--with-gxx-include-dir=/usr/include/c++/4.7 --libdir=/usr/lib
--enable-nls
--with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug
--enable-libstdcxx-time=yes --enable-gnu-unique-object --enable-plugin
--with-system-zlib --enable-objc-gc --with-cloog
--enable-cloog-backend=ppl
--disable-cloog-version-check --disable-ppl-version-check
--enable-multiarch
--disable-werror --with-arch-32=i686 --with-abi=m64
--with-multilib-list=m32,m64,mx32 --with-tune=generic
--enable-checking=release --build=x86_64-linux-gnu
--host=x86_64-linux-gnu
--target=x86_64-linux-gnu
Thread model: posix
gcc version 4.7.3 (Ubuntu/Linaro 4.7.3-1ubuntu1)
--
Andrew Sutton
andrew.n.sutton@xxxxxxxxx
Interesting.
I wonder if http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57644
and http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45253 are
the same bug.
In any case, turning off sanitizer libs will alow me to move forward and
start playing with concepts ;-)
Thanks.
Ed
