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https://issues.apache.org/jira/browse/ARROW-2189?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16421857#comment-16421857
]
Kouhei Sutou commented on ARROW-2189:
-------------------------------------
Thanks. I confirmed it.
I also confirmed the followings:
* Apache Arrow C++ compiled with g++-4.8 + -DCMAKE_BUILD_TYPE=Debug and
foo.cpp compiled with g++-4.9 work well
* Apache Arrow C++ compiled with g++-4.8 + -DCMAKE_BUILD_TYPE=Release and
foo.cpp compiled with g++-4.9 don't work (crashed)
Backtrace:
{noformat}
Program received signal SIGSEGV, Segmentation fault.
0x0000000000000000 in ?? ()
(gdb) bt full
#0 0x0000000000000000 in ?? ()
No symbol table info available.
#1 0x00007ffff7941490 in arrow::ArrayBuilder::Init (
this=this@entry=0x7fffffffe640, capacity=capacity@entry=32)
at /arrow/cpp/src/arrow/builder.cc:67
_s = {state_ = 0x20}
to_alloc = 4
byte_capacity = <optimized out>
#2 0x00007ffff79584e0 in arrow::PrimitiveBuilder<arrow::Int64Type>::Init (
this=0x7fffffffe640, capacity=32) at /arrow/cpp/src/arrow/builder.cc:233
_s = {state_ = 0x20}
nbytes = <optimized out>
#3 0x00007ffff7948b58 in arrow::PrimitiveBuilder<arrow::Int64Type>::Resize (
this=0x7fffffffe640, capacity=32) at /arrow/cpp/src/arrow/builder.cc:253
_s = {state_ = 0x1}
#4 0x00007ffff793e7ab in arrow::ArrayBuilder::Reserve (
this=this@entry=0x7fffffffe640, elements=elements@entry=1)
at /arrow/cpp/src/arrow/builder.cc:113
No locals.
#5 0x000000000040168f in Append (val=1, this=0x7fffffffe640)
at /tmp/local-4.8/include/arrow/builder.h:276
_s = {state_ = 0x616848}
#6 main () at foo.cpp:10
pool =
0x7ffff7dd91a0 <arrow::default_memory_pool()::default_memory_pool_>
builder = {<arrow::PrimitiveBuilder<arrow::Int64Type>> =
{<arrow::ArrayBuilder> = {
_vptr.ArrayBuilder = 0x4024f0 <vtable for
arrow::NumericBuilder<arrow::Int64Type>+16>, type_ = std::shared_ptr (count 2,
weak 0) 0x616848,
pool_ = 0x7ffff7dd91a0
<arrow::default_memory_pool()::default_memory_pool_>, null_bitmap_ =
std::shared_ptr (count 1, weak 0) 0x616890,
null_count_ = 0, null_bitmap_data_ = 0x0, length_ = 0,
capacity_ = 0, children_ = std::vector of length 0, capacity 0},
data_ = std::shared_ptr (empty) 0x0,
raw_data_ = 0x0}, <No data fields>}
buffer = <optimized out>
(gdb) f 1
#1 0x00007ffff7941490 in arrow::ArrayBuilder::Init (
this=this@entry=0x7fffffffe640, capacity=capacity@entry=32)
at /arrow/cpp/src/arrow/builder.cc:67
67 RETURN_NOT_OK(null_bitmap_->Resize(to_alloc));
(gdb) list
62 }
63
64 Status ArrayBuilder::Init(int64_t capacity) {
65 int64_t to_alloc = BitUtil::CeilByte(capacity) / 8;
66 null_bitmap_ = std::make_shared<PoolBuffer>(pool_);
67 RETURN_NOT_OK(null_bitmap_->Resize(to_alloc));
68 // Buffers might allocate more then necessary to satisfy padding
requirements
69 const int64_t byte_capacity = null_bitmap_->capacity();
70 capacity_ = capacity;
71 null_bitmap_data_ = null_bitmap_->mutable_data();
(gdb) p to_alloc
$3 = 4
{noformat}
I don't know why...
BTW, why do you want to use g++-4.9?
> [C++] Seg. fault on make_shared<PoolBuffer>
> -------------------------------------------
>
> Key: ARROW-2189
> URL: https://issues.apache.org/jira/browse/ARROW-2189
> Project: Apache Arrow
> Issue Type: Bug
> Components: C++
> Affects Versions: 0.8.0
> Environment: Debian jessie in a Docker container
> libarrow-dev 0.8.0-2 (Ubuntu trusty)
> Reporter: Rares Vernica
> Priority: Major
> Attachments: Dockerfile, foo.cpp
>
>
> When creating a {{PoolBuffer}}, I get a {{Segmentation fault}} when I use
> {{make_shared}}. If I use the {{shared_ptr}} constructor of {{reset}}, it
> works fine. Here is an example:
> {code:java}
> #include <arrow/builder.h>
> int main()
> {
> arrow::MemoryPool* pool = arrow::default_memory_pool();
> arrow::Int64Builder builder(pool);
> builder.Append(1);
> // #1
> // std::shared_ptr<arrow::PoolBuffer> buffer(new arrow::PoolBuffer(pool));
> // #2
> // std::shared_ptr<arrow::PoolBuffer> buffer;
> // buffer.reset(new arrow::PoolBuffer(pool));
> // #3
> auto buffer = std::make_shared<arrow::PoolBuffer>(pool);
> }
> {code}
> {code:java}
> > g++-4.9 -std=c++11 -larrow foo.cpp && ./a.out
> Segmentation fault (core dumped)
> {code}
> The example works fine with {{#1}} or {{#2}} options. It also works if the
> builder is commented out.
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