Merge from trunk revision 104c05c5284b7822d770ee51a7d91946c7e56d50.

1 files changed, 162 insertions, 0 deletions

diff --git a/gcc/analyzer/call-info.cc b/gcc/analyzer/call-info.cc
new file mode 100644
index 0000000..1d44cb8
--- /dev/null
+++ b/gcc/analyzer/call-info.cc
@@ -0,0 +1,162 @@
+/* Subclasses of custom_edge_info for describing outcomes of function calls.
+   Copyright (C) 2021 Free Software Foundation, Inc.
+   Contributed by David Malcolm <dmalcolm@redhat.com>.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it
+under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3, or (at your option)
+any later version.
+
+GCC is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING3.  If not see
+<http://www.gnu.org/licenses/>.  */
+
+#include "config.h"
+#include "system.h"
+#include "coretypes.h"
+#include "tree.h"
+#include "function.h"
+#include "basic-block.h"
+#include "gimple.h"
+#include "gimple-iterator.h"
+#include "diagnostic-core.h"
+#include "options.h"
+#include "cgraph.h"
+#include "tree-pretty-print.h"
+#include "tristate.h"
+#include "bitmap.h"
+#include "selftest.h"
+#include "function.h"
+#include "json.h"
+#include "analyzer/analyzer.h"
+#include "analyzer/analyzer-logging.h"
+#include "ordered-hash-map.h"
+#include "cfg.h"
+#include "digraph.h"
+#include "analyzer/supergraph.h"
+#include "sbitmap.h"
+#include "analyzer/call-string.h"
+#include "analyzer/program-point.h"
+#include "analyzer/store.h"
+#include "analyzer/region-model.h"
+#include "analyzer/constraint-manager.h"
+#include "diagnostic-event-id.h"
+#include "analyzer/sm.h"
+#include "analyzer/pending-diagnostic.h"
+#include "analyzer/region-model-reachability.h"
+#include "analyzer/analyzer-selftests.h"
+#include "analyzer/program-state.h"
+#include "diagnostic-path.h"
+#include "analyzer/checker-path.h"
+#include "analyzer/diagnostic-manager.h"
+#include "alloc-pool.h"
+#include "fibonacci_heap.h"
+#include "shortest-paths.h"
+#include "analyzer/exploded-graph.h"
+#include "analyzer/call-info.h"
+
+#if ENABLE_ANALYZER
+
+namespace ana {
+
+/* class call_info : public custom_eedge_info_t.  */
+
+/* Implementation of custom_edge_info::print vfunc for call_info:
+   use get_desc to get a label_text, and print it to PP.  */
+
+void
+call_info::print (pretty_printer *pp) const
+{
+  label_text desc (get_desc (pp_show_color (pp)));
+  pp_string (pp, desc.m_buffer);
+  desc.maybe_free ();
+}
+
+/* Implementation of custom_edge_info::add_events_to_path vfunc for
+   call_info: add a custom_event using call_info::get_desc as its
+   description.  */
+
+void
+call_info::add_events_to_path (checker_path *emission_path,
+			       const exploded_edge &eedge) const
+{
+  class call_event : public custom_event
+  {
+  public:
+    call_event (location_t loc, tree fndecl, int depth,
+		const call_info *call_info)
+      : custom_event (loc, fndecl, depth),
+	m_call_info (call_info)
+    {}
+
+    label_text get_desc (bool can_colorize) const
+    {
+      return m_call_info->get_desc (can_colorize);
+    }
+
+  private:
+    const call_info *m_call_info;
+  };
+
+  const exploded_node *src_node = eedge.m_src;
+  const program_point &src_point = src_node->get_point ();
+  tree caller_fndecl = src_point.get_fndecl ();
+  const int stack_depth = src_point.get_stack_depth ();
+
+  emission_path->add_event (new call_event (get_call_stmt ()->location,
+					    caller_fndecl,
+					    stack_depth,
+					    this));
+}
+
+/* Recreate a call_details instance from this call_info.  */
+
+call_details
+call_info::get_call_details (region_model *model,
+			     region_model_context *ctxt) const
+{
+  return call_details (m_call_stmt, model, ctxt);
+}
+
+/* call_info's ctor.
+
+   The call_info instance will outlive the call_details instance;
+   call_details instances are typically created on the stack.  */
+
+call_info::call_info (const call_details &cd)
+: m_call_stmt (cd.get_call_stmt ()),
+  m_fndecl (cd.get_fndecl_for_call ())
+{
+  gcc_assert (m_fndecl);
+}
+
+/* class success_call_info : public call_info.  */
+
+/* Implementation of call_info::get_desc vfunc for success_call_info.  */
+
+label_text
+success_call_info::get_desc (bool can_colorize) const
+{
+  return make_label_text (can_colorize, "when %qE succeeds", get_fndecl ());
+}
+
+/* class failed_call_info : public call_info.  */
+
+/* Implementation of call_info::get_desc vfunc for failed_call_info.  */
+
+label_text
+failed_call_info::get_desc (bool can_colorize) const
+{
+  return make_label_text (can_colorize, "when %qE fails", get_fndecl ());
+}
+
+} // namespace ana
+
+#endif /* #if ENABLE_ANALYZER */