https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101228
Bug ID: 101228
Summary: #include <execution> triggers Intel TBB warning for
tbb/task.h
Product: gcc
Version: 11.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libstdc++
Assignee: unassigned at gcc dot gnu.org
Reporter: kip at thevertigo dot com
Target Milestone: ---
I've managed to reproduce this issue on two different machines, one amd64 and
the other ppc64le. Both were using g++-11 (Ubuntu 11.1.0-1ubuntu1~21.04)
11.1.0.
Here is a minimal:
#include <algorithm>
#include <execution>
using namespace std;
int main()
{
vector<long int> Container(3'000'000);
iota(begin(Container), end(Container), 1);
sort(execution::par, begin(Container), end(Container));
return 0;
}
Compiling raises the following pragma in header generated warning:
$ g++-11 test.cpp -o test -Wall -Werror -std=c++17 -ltbb && ./test
In file included from /usr/include/c++/11/pstl/parallel_backend_tbb.h:26,
from /usr/include/c++/11/pstl/parallel_backend.h:20,
from /usr/include/c++/11/pstl/algorithm_impl.h:22,
from /usr/include/c++/11/pstl/glue_execution_defs.h:50,
from /usr/include/c++/11/execution:32,
from test.cpp:4:
/usr/include/tbb/task.h:21:139: note: ‘#pragma message: TBB Warning: tbb/task.h
is deprecated. For details, please see Deprecated Features appendix in the TBB
reference manual.’
21 | ("TBB Warning: tbb/task.h is deprecated. For details, please see
Deprecated Features appendix in the TBB reference manual.")
|
^
Compiling again with #define TBB_SUPPRESS_DEPRECATED_MESSAGES 1 prepended to
the beginning and the warning disappears.
This appears to have crept in some how with the 11 series. The <execution>
header is indirectly including some deprecated Intel header from the TBB
library.
