https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123500
--- Comment #3 from GCC Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Qing Zhao <[email protected]>: https://gcc.gnu.org/g:078b0a2be260ccb2c118865058e75ae038fc1949 commit r16-7077-g078b0a2be260ccb2c118865058e75ae038fc1949 Author: Qing Zhao <[email protected]> Date: Mon Jan 26 20:22:43 2026 +0000 C: Do not warn for calls to .ACCESS_WITH_SIZE when -Wbad-function-cast is specified [PR123500] For the following source code: (uintptr_t)b->ptr; when b->ptr has an counted_by annotation, the IR for this pointer reference is changed to a call to .ACCESS_WITH_SIZE as: (uintptr_t).ACCESS_WITH_SIZE (b->ptr, &b->len, 0B, 1); As a result, the following code in the routine "build_c_cast" is invoked: 7455 if (TREE_CODE (value) == CALL_EXPR 7456 && TREE_CODE (type) != TREE_CODE (otype)) 7457 warning_at (loc, OPT_Wbad_function_cast, 7458 "cast from function call of type %qT " 7459 "to non-matching type %qT", otype, type); 7460 It's obviously that C FE should exclude the call to .ACCESS_WITH_SIZE from issuing such warning. PR c/123500 gcc/c/ChangeLog: * c-typeck.cc (build_c_cast): Exclude call to .ACCESS_WITH_SIZE from -Wbad-function-cast warnings. gcc/testsuite/ChangeLog: * gcc.dg/pointer-counted-by-pr123500.c: New test.
