Hi Aleksander, > Thanks for reporting this. Did you investigate whether Meson also has > this issue? Fixing anything for Autotools arguably has low priority > since we are going to get rid of it in the near future, but Meson is > another matter.
Thanks for the reply. Yes, I tested with Meson and confirmed the same issue occurs. When building PostgreSQL 17.2 with ThreadSanitizer: meson setup builddir \ --prefix=/path/to/install \ --buildtype=debug \ -Dcassert=true \ -Dtap_tests=enabled \ -Db_lto=false \ -Db_sanitize=thread \ -Db_lundef=false \ -Dc_args="-O0 -g -gdwarf-2 -fno-omit-frame-pointer" The postgres binary segfaults during early initialization, exactly as with the Autotools build. Applying the patch I submitted, which moves __ubsan_default_options() to a separate compilation unit built without sanitizer instrumentation, successfully resolves the segfault. Thanks & regards, Emmanuel Sibi
