https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107288
Bug ID: 107288
Summary: Double-free of temporaries created in statement
following co_await
Product: gcc
Version: 12.2.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: hodges.r at gmail dot com
Target Milestone: ---
Compiling the attached program results in a call to abort() due to a double
free of the temporary `foo`.
The problem is in this statement:
```
co_await chan.async_send({},
foo { .s = "hello world", .i = 1 },
asio::redirect_error(asio::use_awaitable, ec));
```
Modifying the code to remove the temporary works around the issue:
```
auto f = foo { .s = "hello world", .i = 1 };
co_await chan.async_send({},
std::move(f),
asio::redirect_error(asio::use_awaitable, ec));
```
Compiler command line:
```
$ /usr/bin/c++ -DBOOST_SYSTEM_NO_LIB -DBOOST_THREAD_NO_LIB -DBOOST_URL_NO_LIB=1
-DBOOST_URL_STATIC_LINK=1 -DCPP_JWT_USE_VENDORED_NLOHMANN_JSON
-I/home/rhodges/github/Power-Trade/riskmon/apps/scratch2
-I/home/rhodges/github/Power-Trade/riskmon/build/apps/scratch2
-I/home/rhodges/github/Power-Trade/riskmon/libs
-I/home/rhodges/github/Power-Trade/riskmon/build/_deps/boost_url-src/include
-isystem /home/rhodges/work/gcc/include -g -save-temps -std=gnu++20 scratch2
/home/rhodges/github/Power-Trade/riskmon/apps/scratch2/main.cpp
```
Result of running the program:
```
$ ./scratch2
munmap_chunk(): invalid pointer
Aborted (core dumped)
```
