https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116450
Bug ID: 116450
Summary: ICE in in expand_expr_real_1, at expr.cc:11376
Product: gcc
Version: 14.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: indiosmo at gmail dot com
Target Milestone: ---
Created attachment 58970
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=58970&action=edit
preprocessed source
ICE with gcc 14.2.0.
Compiler info, code and output below, but for convenience here's a godbolt link
to reproduce: https://godbolt.org/z/KavcMesas.
GCC 14.1.0 compiles it.
gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/home/msi/abacus_workspace/gcc-14.2.0/libexec/gcc/x86_64-pc-linux-gnu/14.2.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../gcc-14.2.0/configure
--prefix=/home/msi/cpp_workspace/objdir/../gcc-14.2.0 --disable-multilib
Thread model: posix
Supported LTO compression algorithms: zlib
gcc version 14.2.0 (GCC)
Code
```
#include "boost/asio/detached.hpp"
#include "boost/asio/io_context.hpp"
#include "boost/beast/core/tcp_stream.hpp"
#include "boost/beast/websocket/stream.hpp"
#include "boost/cobalt.hpp"
namespace {
using tcp_socket =
boost::cobalt::use_op_t::as_default_on_t<boost::asio::ip::tcp::socket>;
using tcp_acceptor =
boost::cobalt::use_op_t::as_default_on_t<boost::asio::ip::tcp::acceptor>;
using tcp_stream = boost::beast::websocket::stream<boost::beast::tcp_stream>;
class server
{
public:
void start()
{
boost::cobalt::spawn(io_context_, run(), boost::asio::detached);
}
private:
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wmismatched-new-delete"
boost::cobalt::task<void> run()
{
// instantiate stream generator
auto get_stream = accept();
for (;;) {
// get a stream
auto stream = co_await get_stream;
}
co_return;
}
#pragma GCC diagnostic pop
boost::cobalt::generator<tcp_stream> accept()
{
auto executor = co_await boost::cobalt::this_coro::executor;
auto endpoint =
boost::asio::ip::tcp::endpoint{boost::asio::ip::make_address("0.0.0.0"), 8095};
tcp_acceptor acceptor{executor, endpoint};
acceptor.set_option(boost::asio::ip::tcp::acceptor::reuse_address(true));
for (;;) {
tcp_stream stream = tcp_stream{co_await acceptor.async_accept()};
co_yield std::move(stream);
}
co_return tcp_stream{tcp_socket{acceptor.get_executor()}};
}
boost::asio::io_context io_context_;
};
} // namespace
int main()
{
server s{};
s.start();
return EXIT_SUCCESS;
}
```
output:
```
/home/msi/abacus_workspace/gcc-14.2.0/bin/g++
-DBOOST_ASIO_CONCURRENCY_HINT_DEFAULT=1 -DBOOST_COBALT_NO_LIB
-DBOOST_LEAF_CFG_GNUC_STMTEXPR=0 -isystem
/home/msi/abacus_workspace/boost_1.86.0/include -g -std=c++23 -Wall -Wextra
-DBOOST_COBALT_NO_PMR -ggdb -fdiagnostics-color=always -fno-strict-aliasing
-fuse-ld=mold -Wl,--no-undefined -fno-omit-frame-pointer
-fconcepts-diagnostics-depth=2 -march=native -Werror -Wnull-dereference
-Wdangling-reference -Wdouble-promotion -Wduplicated-cond -Wduplicated-branches
-Wunused-function -Wlogical-op -Wrestrict -Wpedantic -pedantic-errors
-Wcast-align=strict -Wconversion -Wnrvo -MD -MT
sandbox/CMakeFiles/sandbox.dir/main.cpp.o -MF
sandbox/CMakeFiles/sandbox.dir/main.cpp.o.d -o
sandbox/CMakeFiles/sandbox.dir/main.cpp.o -c
/home/msi/abacus_workspace/abacus2/sandbox/main.cpp
during RTL pass: expand
/home/msi/abacus_workspace/abacus2/sandbox/main.cpp: In member function
‘boost::cobalt::task<void> {anonymous}::server::run()’:
/home/msi/abacus_workspace/abacus2/sandbox/main.cpp:37:3: internal compiler
error: in expand_expr_real_1, at expr.cc:11376
37 | }
| ^
0x78243e expand_expr_real_1(tree_node*, rtx_def*, machine_mode,
expand_modifier, rtx_def**, bool)
../../gcc-14.2.0/gcc/expr.cc:11376
0xbc17a9 expand_expr_real(tree_node*, rtx_def*, machine_mode, expand_modifier,
rtx_def**, bool)
../../gcc-14.2.0/gcc/expr.cc:9451
0xbc17a9 expand_expr(tree_node*, rtx_def*, machine_mode, expand_modifier)
../../gcc-14.2.0/gcc/expr.h:316
0xbc17a9 expand_expr_real_1(tree_node*, rtx_def*, machine_mode,
expand_modifier, rtx_def**, bool)
../../gcc-14.2.0/gcc/expr.cc:11730
0xbc2864 expand_expr_real(tree_node*, rtx_def*, machine_mode, expand_modifier,
rtx_def**, bool)
../../gcc-14.2.0/gcc/expr.cc:9451
0xbc2864 expand_expr_real_1(tree_node*, rtx_def*, machine_mode,
expand_modifier, rtx_def**, bool)
../../gcc-14.2.0/gcc/expr.cc:11957
0xbcdb84 expand_expr_real(tree_node*, rtx_def*, machine_mode, expand_modifier,
rtx_def**, bool)
../../gcc-14.2.0/gcc/expr.cc:9451
0xbcdb84 store_expr(tree_node*, rtx_def*, int, bool, bool)
../../gcc-14.2.0/gcc/expr.cc:6751
0xbd0186 expand_assignment(tree_node*, tree_node*, bool)
../../gcc-14.2.0/gcc/expr.cc:6472
0xbd0186 expand_assignment(tree_node*, tree_node*, bool)
../../gcc-14.2.0/gcc/expr.cc:5957
0xabac10 expand_gimple_stmt_1
../../gcc-14.2.0/gcc/cfgexpand.cc:3998
0xabac10 expand_gimple_stmt
../../gcc-14.2.0/gcc/cfgexpand.cc:4077
0xabfbb7 expand_gimple_basic_block
../../gcc-14.2.0/gcc/cfgexpand.cc:6133
0xac1b06 execute
../../gcc-14.2.0/gcc/cfgexpand.cc:6872
Please submit a full bug report, with preprocessed source (by using
-freport-bug).
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
```
