https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105899
--- Comment #6 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by David Malcolm <dmalc...@gcc.gnu.org>: https://gcc.gnu.org/g:0ae07a7203dd24f90e49d025046e61ef90a9fd18 commit r14-3463-g0ae07a7203dd24f90e49d025046e61ef90a9fd18 Author: David Malcolm <dmalc...@redhat.com> Date: Thu Aug 24 10:24:38 2023 -0400 analyzer: reimplement kf_strcpy [PR105899] This patch reimplements the analyzer's implementation of strcpy using the region_model::scan_for_null_terminator infrastructure, so that e.g. it can complain about out-of-bounds reads/writes, unterminated strings, etc. gcc/analyzer/ChangeLog: PR analyzer/105899 * kf.cc (kf_strcpy::impl_call_pre): Reimplement using check_for_null_terminated_string_arg. * region-model.cc (region_model::get_store_bytes): Shortcut reading all of a string_region. (region_model::scan_for_null_terminator): Use get_store_value for the bytes rather than "unknown" when returning an unknown length. (region_model::write_bytes): New. * region-model.h (region_model::write_bytes): New decl. gcc/testsuite/ChangeLog: PR analyzer/105899 * gcc.dg/analyzer/out-of-bounds-diagram-16.c: New test. * gcc.dg/analyzer/strcpy-1.c: Add test coverage. * gcc.dg/analyzer/strcpy-3.c: Likewise. * gcc.dg/analyzer/strcpy-4.c: New test. Signed-off-by: David Malcolm <dmalc...@redhat.com>
