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This patch is yet more preliminary work towards generalizing sm-malloc.cc beyond just malloc/free. It eliminates sm_context::warn_for_state in terms of a new sm_context::warn vfunc, guarded by sm_context::get_state calls. gcc/analyzer/ChangeLog: * diagnostic-manager.cc (null_assignment_sm_context::warn_for_state): Replace with... (null_assignment_sm_context::warn): ...this. * engine.cc (impl_sm_context::warn_for_state): Replace with... (impl_sm_context::warn): ...this. * sm-file.cc (fileptr_state_machine::on_stmt): Replace warn_for_state and on_transition calls with a get_state test guarding warn and set_next_state calls. * sm-malloc.cc (malloc_state_machine::on_stmt): Likewise. * sm-pattern-test.cc (pattern_test_state_machine::on_condition): Replace warn_for_state call with warn call. * sm-sensitive.cc (sensitive_state_machine::warn_for_any_exposure): Replace warn_for_state call with a get_state test guarding a warn call. * sm-signal.cc (signal_state_machine::on_stmt): Likewise. * sm-taint.cc (taint_state_machine::on_stmt): Replace warn_for_state and on_transition calls with a get_state test guarding warn and set_next_state calls. * sm.h (sm_context::warn_for_state): Replace with... (sm_context::warn): ...this.
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