re PR c++/9433 (SegFault in dynamic_cast)

libstdc++-v3:
        PR c++/9433
        * libsupc++/tinfo.cc (__vmi_class_type_info::__do_dyncast): Cope
        with bases which are very ambiguous.
gcc/testsuite:
        * g++.dg/abi/dcast1.C: New test.

From-SVN: r61973

2 files changed, 33 insertions, 0 deletions

diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 63d0d29..5523ceb 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,7 @@
+2003-01-28  Nathan Sidwell  <nathan@codesourcery.com>
+
+	* g++.dg/abi/dcast1.C: New test.
+
 2003-01-28  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>
 
 	* gcc.c-torture/execute/builtin-constant.x: Only expect failure at -O1.
diff --git a/gcc/testsuite/g++.dg/abi/dcast1.C b/gcc/testsuite/g++.dg/abi/dcast1.C
new file mode 100644
index 0000000..402684f
--- /dev/null
+++ b/gcc/testsuite/g++.dg/abi/dcast1.C
@@ -0,0 +1,29 @@
+// { dg-do compile }
+
+// Copyright (C) 2003 Free Software Foundation, Inc.
+// Contributed by Nathan Sidwell 28 Jan 2003 <nathan@codesourcery.com>
+
+// PR 9433. segfault at runtime.
+
+struct A        { virtual void f() {}; };
+struct B        {int b;};
+struct C : A, B { virtual void f() {}; int c;};
+struct D : C    {int d;};
+struct E : C    {int e;};
+struct F : protected D, E  {int f;};
+struct H : virtual F {int h;};
+struct I : H  {int i;};
+struct J : H  {int j;};
+struct K : I, J { virtual void f() {}; int k; };
+struct M : K  {int m;};
+struct N : M  {int n;};
+struct O : M  {int o;};
+struct P : N, O { virtual void f() {}; int p;};
+
+int main()
+{
+  P obj;
+  A* a1 = (D *) (&obj);
+  H* hp = dynamic_cast<H*>(a1);
+  return hp != 0;
+}