https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106300
--- Comment #2 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:792f039fc37faa3446725a643c8018f084e8ccab commit r13-3466-g792f039fc37faa3446725a643c8018f084e8ccab Author: David Malcolm <dmalc...@redhat.com> Date: Mon Oct 24 16:38:22 2022 -0400 analyzer: handle "pipe" and "pipe2" [PR106300] gcc/analyzer/ChangeLog: PR analyzer/106300 * engine.cc (impl_region_model_context::get_fd_map): New. * exploded-graph.h (impl_region_model_context::get_fd_map): New decl. * region-model-impl-calls.cc (region_model::impl_call_pipe): New. * region-model.cc (region_model::update_for_int_cst_return): New, based on... (region_model::update_for_zero_return): ...this. Reimplement in terms of the former. (region_model::on_call_pre): Handle "pipe" and "pipe2". (region_model::on_call_post): Likewise. * region-model.h (region_model::impl_call_pipe): New decl. (region_model::update_for_int_cst_return): New decl. (region_model::mark_as_valid_fd): New decl. (region_model_context::get_fd_map): New pure virtual fn. (noop_region_model_context::get_fd_map): New. (region_model_context_decorator::get_fd_map): New. * sm-fd.cc: Include "analyzer/program-state.h". (fd_state_machine::describe_state_change): Handle transitions from start state to valid states. (fd_state_machine::mark_as_valid_fd): New. (fd_state_machine::on_stmt): Add missing return for "creat". (region_model::mark_as_valid_fd): New. gcc/ChangeLog: PR analyzer/106300 * doc/invoke.texi (Static Analyzer Options): Add "pipe" and "pipe2" to the list of functions the analyzer has hardcoded knowledge of. gcc/testsuite/ChangeLog: PR analyzer/106300 * gcc.dg/analyzer/pipe-1.c: New test. * gcc.dg/analyzer/pipe-glibc.c: New test. * gcc.dg/analyzer/pipe-manpages.c: New test. * gcc.dg/analyzer/pipe2-1.c: New test. Signed-off-by: David Malcolm <dmalc...@redhat.com>
