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In clang, -fsanitize=undefined includes -fsanitize=function, which reports every call made through a function pointer whose type does not exactly match the called function, so it fires all over the place on expression tree walkers and mutators, as well as a few other places. So -fsanitize=undefined hasn't been working cleanly under clang for a while. (Before clang 17, it only applied to C++.) This is the same issue that caused us to use -Wno-cast-function-type-strict with clang. That warning applies at the place where the mismatching function pointer is passed, so there are potentially hundreds of sites. Therefore, a global disabling is appropriate. The sanitizer, on the other hand, triggers where the function is called, which are only about two dozen places, so it seems possible to silence these checks individually and still main the check for accidental violations elsewhere. Add pg_attribute_no_sanitize_function() and place it on the functions that make such calls. Reviewed-by: Chao Li <li.evan.chao@gmail.com> Discussion: https://www.postgresql.org/message-id/flat/2db401d9-ef16-430e-a42c-34477006a49f%40eisentraut.org
PostgreSQL Database Management System
This directory contains the source code distribution of the PostgreSQL database management system.
PostgreSQL is an advanced object-relational database management system that supports an extended subset of the SQL standard, including transactions, foreign keys, subqueries, triggers, user-defined types and functions. This distribution also contains C language bindings.
Copyright and license information can be found in the file COPYRIGHT.
General documentation about this version of PostgreSQL can be found at https://www.postgresql.org/docs/devel/. In particular, information about building PostgreSQL from the source code can be found at https://www.postgresql.org/docs/devel/installation.html.
The latest version of this software, and related software, may be obtained at https://www.postgresql.org/download/. For more information look at our web site located at https://www.postgresql.org/.