This is definitely an option you want to be using when using ASan or LSan. You may also want to consider additionally using -momit-leaf-frame-pointer to skip frame pointers only in leaf functions while keeping frame pointers for non-leaf functions. This can make small leaf functions significantly shorter, limiting some of the negative impact of using -fno-omit-frame-pointer alone.
Sometimes even -fno-omit-frame-pointer won't help, like if the stack is being unwound through a system library that was built without frame pointers. In that case you can switch to the slow unwinder. Set the environment variable `ASAN_OPTIONS=fast_unwind_on_malloc=0` when running your program. But note that this will make most programs run significantly slower so you probably want to use it only when you really need it and not as the default setting for all runs.
abbeyj|3 years ago
Sometimes even -fno-omit-frame-pointer won't help, like if the stack is being unwound through a system library that was built without frame pointers. In that case you can switch to the slow unwinder. Set the environment variable `ASAN_OPTIONS=fast_unwind_on_malloc=0` when running your program. But note that this will make most programs run significantly slower so you probably want to use it only when you really need it and not as the default setting for all runs.