itCppCon21 - The Quest For A Better Crash (Victor Ciura)

Event page: https://italiancpp.org/itcppcon21
Slides: https://github.com/italiancpp/itcppcon21
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Crashed! Now What? Sometimes reproducing a crash on a developer's machine is next to impossible. Most of the time remote debugging is out of the question and all you’re left with are some scant log files and maybe a memory dump file, if you’re lucky. Wouldn’t you like to know the exact point of failure in the program and how it got there, on the client’s PC? How can you get your hands on a StackTrace of that crash on the client’s machine? And how can you make any sense of it without symbols? In this session, I’ll present a Windows specific technique we developed, that my team uses regularly to debug such scenarios in production. We leverage OS APIs like the Image Help Library (ImageHlp.dll), the Debug Help Library (DbgHelp.dll) to work with PE/COFF images and PDBs and reconstruct symbolicated StackTraces for Release crashes in production. The technique and APIs work all the way from Windows XP up to Windows 10, both for x86 and x64 executables. We’ll see how symbols are loaded and how PDBs work; we’ll discuss partial/incremental PDBs and we’ll have to get comfortable with Structured Exception Handling and Address Space Layout Randomization.

Видео itCppCon21 - The Quest For A Better Crash (Victor Ciura) канала Italian Cpp Community