addr2line can show information about how functions were inlined,
including function names
Typical new output:
```
0x400dec57: mp_obj_get_type at /home/jepler/src/circuitpython/ports/espressif/../../py/obj.c:68
(inlined by) mp_obj_print_helper at /home/jepler/src/circuitpython/ports/espressif/../../py/obj.c:133
(inlined by) mp_obj_print_helper at /home/jepler/src/circuitpython/ports/espressif/../../py/obj.c:114
0x400e1a25: fun_builtin_1_call at /home/jepler/src/circuitpython/ports/espressif/../../py/objfun.c:75
0x400dd016: mp_call_function_n_kw at /home/jepler/src/circuitpython/ports/espressif/../../py/runtime.c:665
0x400eac99: mp_execute_bytecode at /home/jepler/src/circuitpython/ports/espressif/../../py/vm.c:936
0x400e1ae9: fun_bc_call at /home/jepler/src/circuitpython/ports/espressif/../../py/objfun.c:297 (discriminator 4)
0x400dd016: mp_call_function_n_kw at /home/jepler/src/circuitpython/ports/espressif/../../py/runtime.c:665
0x400dd03a: mp_call_function_0 at /home/jepler/src/circuitpython/ports/espressif/../../py/runtime.c:638
0x40117c03: parse_compile_execute at /home/jepler/src/circuitpython/ports/espressif/../../shared/runtime/pyexec.c:146
0x4011800d: pyexec_friendly_repl at /home/jepler/src/circuitpython/ports/espressif/../../shared/runtime/pyexec.c:734
0x400eeded: run_repl at /home/jepler/src/circuitpython/ports/espressif/../../main.c:823
(inlined by) main at /home/jepler/src/circuitpython/ports/espressif/../../main.c:922
0x400ef5e3: app_main at /home/jepler/src/circuitpython/ports/espressif/supervisor/port.c:410
0x401bb461: main_task at /home/jepler/src/circuitpython/ports/espressif/build-adafruit_feather_esp32_v2/esp-idf/../../esp-idf/components/freertos/port/port_common.c:141
```
Jeff Epler
Scott Shawcroft