https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106003
--- Comment #2 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Immad Mir <m...@gcc.gnu.org>: https://gcc.gnu.org/g:97baacba963c06e3d0e33cde04e7e687671e60e7 commit r13-1404-g97baacba963c06e3d0e33cde04e7e687671e60e7 Author: Immad Mir <mirimma...@gmail.com> Date: Sat Jul 2 22:09:37 2022 +0530 analyzer: implement five new warnings for misuse of POSIX file descriptor APIs [PR106003]. This patch adds a new state machine to the analyzer for checking usage of POSIX file descriptor APIs with five new warnings. It adds: - check for FD leaks (CWE 775). - check for double "close" of a FD (CWE-1341). - check for read/write of a closed file descriptor. - check whether a file descriptor was used without being checked for validity. - check for read/write of a descriptor opened for just writing/reading. gcc/ChangeLog: PR analyzer/106003 * Makefile.in (ANALYZER_OBJS): Add sm-fd.o. * doc/invoke.texi: Add -Wanalyzer-fd-double-close, -Wanalyzer-fd-leak, -Wanalyzer-fd-access-mode-mismatch, -Wanalyzer-fd-use-without-check, -Wanalyzer-fd-use-after-close. gcc/analyzer/ChangeLog: PR analyzer/106003 * analyzer.opt (Wanalyzer-fd-leak): New option. (Wanalyzer-fd-access-mode-mismatch): New option. (Wanalyzer-fd-use-without-check): New option. (Wanalyzer-fd-double-close): New option. (Wanalyzer-fd-use-after-close): New option. * sm.h (make_fd_state_machine): New decl. * sm.cc (make_checkers): Call make_fd_state_machine. * sm-fd.cc: New file. gcc/testsuite/ChangeLog: PR analyzer/106003 * gcc.dg/analyzer/fd-1.c: New test. * gcc.dg/analyzer/fd-2.c: New test. * gcc.dg/analyzer/fd-3.c: New test. * gcc.dg/analyzer/fd-4.c: New test.
