std::call_once throws std::system_error (Unknown error -1) after call in lexer initializer

[olowo726]

• [ x] I have reproduced my issue using the latest version of ANTLR
• [ x] I have asked at stackoverflow
• [ x] Responses from the above seem to indicate that my issue could be an ANTLR bug
• [x ] I have done a search of the existing issues to make sure I'm not sending in a duplicate

I recently updated from 4.9.3 to 4.13.1 and after that I experience std::call_once throws std::system_error (Unknown error -1) after call in lexer initializer in my application.

Build of ANTLR, my application and test of my application is performed on the same machine running Ubuntu 20.04. Linking against the static antlr library.

Researching the issue it seems like it's not the first time it appears so I wonder if it has been reintroduced.

It is mention in #3708 and #4086 (went into the 4.12 milestone). There is also stackoverflow posts https://stackoverflow.com/questions/51584960/stdcall-once-throws-stdsystem-error-unknown-error-1 and https://stackoverflow.com/questions/72688711/anltr4-cpp-demo-fails-to-run-because-of-a-gthread-problem

Several of these posts indicates that the fix is to add

find_package(Threads REQUIRED)
target_link_libraries(MyTarget Threads::Threads)

to CMakeLists.txt. This was already present in my CMakeLists.txt.

https://stackoverflow.com/questions/72688711/anltr4-cpp-demo-fails-to-run-because-of-a-gthread-problem indicates that a solution is to add

set(THREADS_PREFER_PTHREAD_FLAG ON)

This I have tried and didn't help.

I can add that it for some reason does work if the code is called directly from a gtest testcase instead of the standalone application.

Any hints on how to resolve this issue?

[olowo726]

target_link_libraries(MyTarget Threads::Threads) added also to CMakeLists.txt for antlr solved it.