“this” captured by lambda is incorrect. GCC compiler bug?

Question

For the last few days, I have been debugging a weird issue involving lambdas in C++. I have reduced the problem down to the following symptoms:

• The

Answer 1

Sounds like the following compiler bug: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77933 (which only effects code generated with O1 optimizations or higher).