The OpenSSL code in libpq have two issues for multithreading: the verify_cb callback use a global variable to pass back error detail state and there is one use of strerror().
The attached fixes both, with no functional change, in order to pave the way for multithreading: * Rather than using a global variable the callback use a new member in the Port struct for passing the string, and the Port struct is in turn passed as private data in the SSL object * The strerror call is replaced with a strerror_r call using the already existing errorbuffer These were tested on OpenSSL 1.1.1 through 3.5. Parking this in the next commitfest. -- Daniel Gustafsson
0001-libpq-Fix-multithreading-issues-in-the-OpenSSL-suppo.patch
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