On Tue, 2022-08-09 at 13:16 +0530, Immad Mir wrote: > This patch fixes the ICE caused by valid_to_unchecked_state, > at analyzer/sm-fd.cc by handling the m_start state in > check_for_dup. > > Tested lightly on x86_64. > > gcc/analyzer/ChangeLog: > PR analyzer/106551 > * sm-fd.cc (check_for_dup): handle the m_start > state when transitioning the state of LHS > of dup, dup2 and dup3 call. > > Signed-off-by: Immad Mir <mirim...@outlook.com> > --- > gcc/analyzer/sm-fd.cc | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/gcc/analyzer/sm-fd.cc b/gcc/analyzer/sm-fd.cc > index 8bb76d72b05..c8b9930a7b6 100644 > --- a/gcc/analyzer/sm-fd.cc > +++ b/gcc/analyzer/sm-fd.cc > @@ -983,7 +983,7 @@ fd_state_machine::check_for_dup (sm_context > *sm_ctxt, const supernode *node, > case DUP_1: > if (lhs) > { > - if (is_constant_fd_p (state_arg_1)) > + if (is_constant_fd_p (state_arg_1) || state_arg_1 == > m_start) > sm_ctxt->set_next_state (stmt, lhs, > m_unchecked_read_write); > else > sm_ctxt->set_next_state (stmt, lhs, > @@ -1011,7 +1011,7 @@ fd_state_machine::check_for_dup (sm_context > *sm_ctxt, const supernode *node, > file descriptor i.e the first argument. */ > if (lhs) > { > - if (is_constant_fd_p (state_arg_1)) > + if (is_constant_fd_p (state_arg_1) || state_arg_1 == > m_start) > sm_ctxt->set_next_state (stmt, lhs, > m_unchecked_read_write); > else > sm_ctxt->set_next_state (stmt, lhs,
Thanks. The fix looks reasonable, but please can the patch also add a reproducer to the test suite, covering each of the three dup/dup2/dup3 entrypoints - presumably the one from the bug can be used/adapted. Dave