I have a segfault occuring at __gnu_cxx::__exchange_and_add (mem=0x40d, val=-1) at

Question

I have a segfault occuring at __gnu_cxx::__exchange_and_add (mem=0x40d, val=-1) at

/usr/include/c++/7/ext/atomicity.h:49

during string destruction , during:

vec.erase(vec.begin());

here vec is std::vector<std::string>

any idea what may be going wrong? the string is being pushed back as a copy everywhere .. and the vector elements pass through async methods of asio

prob corruption elsewhere.. i'll run it through stuff

0

18.09.2023

2 ответов

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The prodigal ᥀ Автор вопроса

Madhu
UBSan will definitely catch some issues but it can...

Tried UBSan.. couldn't understand caught issue.. prob caught downstream.. tried MSan next.. issue doesn't reproduce with MSan 😂😅 prob coz system slows down at least 2X ..

0

20.09.2023

Madhu · Accepted Answer

Madhu

UBSan will definitely catch some issues but it can't catch everything. Try address sanitizer, thread sanitized and memory sanitizer as well. Between them, they catch many issues

0

18.09.2023

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