Using the addr2line utility for Teensy - TeensyUser/doc GitHub Wiki

Using CrashReport() in your sketch will print an address indicating where a crash has occurred. The listed address can be provided to the addr2line utility to find the source code line number that was executing when the crash occurred. A description of how to use the addr2line utility can be found in the Teensy forum at the following

Detailed instructions and location of addr2line for Arduino IDE 2.3.x: https://forum.pjrc.com/index.php?threads/teensy-4-arduino-2-0-3-addr2line-tutorial.71838/post-318350

Location of addr2line for Arduino IDE 1.8.x: https://forum.pjrc.com/index.php?threads/micromod-beta-testing.66771/post-328196