Programmer Humor

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C++ (lemmy.zip)

submitted 6 months ago by [email protected] to c/[email protected]

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[–] [email protected] 1 points 6 months ago (1 children)

Well, threadsanitizer catches them in runtime. Not sure about GCC static analyser and other SA tools.

[–] [email protected] 3 points 6 months ago* (last edited 6 months ago) (1 children)

I use thread sanitizer and address sanitizer in my CI, and they have certainly helped in some cases, but they don't catch everything. In fact it's the cases that they miss which are by far the most subtle instances of undefined behavior of all.

They also slow down execution so severely that I can't use them when trying to recreate issues that occur in production.

[–] [email protected] 1 points 6 months ago

They caught lock inversion, that helped to fix obscure hangs, that I couldn't reproduce on my machine, but were constantly happening on machine with more cores.