Recently [0] replaced back-traces from `execinfo.h` with ASAN's
`__asan_describe_address` since the linking options to hide symbols
cause the stack-traces only to include addresses (without functions).
Although using ASAN makes sense when enabled, in my tests the
stack-traces are sometimes empty. Using CMAKE_BUILD_TYPE=RelWithDebInfo
for e.g. wasn't showing a stack-trace for the leak fixed in [1].
A utility is now included to conveniently expand the addresses from
these stack traces (`tools/utils/addr2line_backtrace.py`).
Restore support for the execinfo stack-trace reporting, used when ASAN
is disabled.
[0]: 2e79ca3205
[1]: a9f0d19197
6b967287c9