moba15 opened a new issue, #45608:
URL: https://github.com/apache/arrow/issues/45608
### Describe the bug, including details regarding any error messages,
version, and platform.
I am encountering compilation errors when using Apache Arrow Flight SQL 19
in a C++20 project. The issue appears when including <arrow/flight/api.h>,
where arrow::flight::FlightEndpoint is reported as an incomplete type.
The compiler erros i get:
`
In file included from /lingo-db/src/utility/server/StatementHandler.cpp:7:
In file included from /usr/include/arrow/api.h:22:
In file included from /usr/include/arrow/array.h:41:
In file included from /usr/include/arrow/array/array_base.h:24:
In file included from
/usr/lib/gcc/x86_64-linux-gnu/13/../../../../include/c++/13/vector:66:
/usr/lib/gcc/x86_64-linux-gnu/13/../../../../include/c++/13/bits/stl_vector.h:370:35:
error: arithmetic on a pointer to an incomplete type
'arrow::flight::FlightEndpoint'
370 | _M_impl._M_end_of_storage - _M_impl._M_start);
`
**System Information:**
OS: Ubuntu (installed Apache Arrow from the official repo)
Compiler: Clang 20
C++ Standard: C++20
Apache Arrow Version: 19
Installation Method: Official Apache Arrow APT repository
`sudo apt install -y -V libarrow-dev libarrow-flight-dev
libarrow-flight-sql-dev`
**Cmake**
`
add_library(serverLib OBJECT
StatementHandler.cpp)
target_link_libraries(serverLib PUBLIC Arrow::arrow_static
ArrowFlight::arrow_flight_static ArrowFlightSql::arrow_flight_sql_static
Parquet::parquet_static ArrowDataset::arrow_dataset_static)
set_target_properties(serverLib PROPERTIES CXX_STANDARD 20
CXX_STANDARD_REQUIRED ON)
`
**Steps Taken to Resolve the Issue:**
- Explicitly including <arrow/flight/types.h> before <arrow/flight/api.h> :
No effect
- Reordering includes (e.g., <arrow/flight/api.h> before <arrow/api.h>): No
effect
- Using other compiler version clang 19.x: no effect
Expected Behavior:
Compilation should succeed without incomplete type errors when using Flight
SQL in a C++20 environment.
### Component(s)
C++
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