[committed] analyzer: fix ICE on dtor [PR97489]

[David Malcolm via Gcc-patches]

Successfully bootstrapped & regrtested on x86_64-pc-linux-gnu.
Pushed to master as r11-4220-gb7f2cfbf0fc7bcd5c1e60fca354de8bf60f9acfa.

gcc/analyzer/ChangeLog:
        PR analyzer/97489
        * engine.cc (exploded_graph::add_function_entry): Assert that we
        have a function body.
        (exploded_graph::on_escaped_function): Reject fndecls that don't
        have a function body.

gcc/testsuite/ChangeLog:
        PR analyzer/97489
        * g++.dg/analyzer/pr97489.C: New test.
---
 gcc/analyzer/engine.cc                  | 5 +++++
 gcc/testsuite/g++.dg/analyzer/pr97489.C | 6 ++++++
 2 files changed, 11 insertions(+)
 create mode 100644 gcc/testsuite/g++.dg/analyzer/pr97489.C

diff --git a/gcc/analyzer/engine.cc b/gcc/analyzer/engine.cc
index 65d7495f26f..b1c877e5231 100644
--- a/gcc/analyzer/engine.cc
+++ b/gcc/analyzer/engine.cc
@@ -1937,6 +1937,8 @@ exploded_graph::~exploded_graph ()
 exploded_node *
 exploded_graph::add_function_entry (function *fun)
 {
+  gcc_assert (gimple_has_body_p (fun->decl));
+
   /* Be idempotent.  */
   if (m_functions_with_enodes.contains (fun))
     {
@@ -3982,6 +3984,9 @@ exploded_graph::on_escaped_function (tree fndecl)
   if (!fun)
     return;
 
+  if (!gimple_has_body_p (fndecl))
+    return;
+
   exploded_node *enode = add_function_entry (fun);
   if (logger)
     {
diff --git a/gcc/testsuite/g++.dg/analyzer/pr97489.C 
b/gcc/testsuite/g++.dg/analyzer/pr97489.C
new file mode 100644
index 00000000000..9322e72f5c4
--- /dev/null
+++ b/gcc/testsuite/g++.dg/analyzer/pr97489.C
@@ -0,0 +1,6 @@
+struct X {
+  virtual ~X() {}
+  virtual void key_function();
+};
+
+void X::key_function() {}
-- 
2.26.2