Hi gcc list, I'm learning c++ coroutines but I ran into a behavior that I can't make sense of.
Here is the godbolt link: https://godbolt.org/z/rdPo8ceKP In some cases, it appears that temporaries are incorrectly freed, the code shows test1 and test2 that works as expected, but test3 raises a "used after free" error from address sanitizer that doesn't make sense to me. I'm aware that there are some potential caveats with passing references to a coroutine, so I'm possibly missing some subtle detail. But it looks like it might be a gcc bug since the same doesn't happen with clang. I tested a few different versions of g++ available on ubuntu and godbolt but got the same result. The compilations flags I used were: -ggdb3 -Og -std=c++20 -Wall -Wextra -Werror -D_GLIBCXX_DEBUG -fsanitize=address Cheers!
