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dlt-user: Fix crashes in dlt_free during dlt_init
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If dlt_free is called while dlt_init is running, the dlt-user library
crashes because the init and free where not thread safe.
This commit introduces a new field dlt_user_initialising
which will prevent entering dlt_free while dlt_init is running.
Correctness is ensured by a unit test

Signed-off-by: Alexander Mohr <[email protected]>
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Alexander Mohr committed Jan 19, 2022
1 parent 0138c00 commit 2be5223
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