eaaf7465ee
strerror_r() is used instead of strerror(). The usual trick is employed: we allocate a buffer that lives until the end of the surrounding block to provide the scratch space. This change is particularly important forn sd-bus and the pam modules, which may be called from threaded code. I checked the codebase, and we only use bus_error_message() in log statements, so the returned pointer is not used beyond its valid lifetime.
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