obtained gcc-4.6.4.tar.bz2 from upstream website;upstream

verified gcc-4.6.4.tar.bz2.sig;
imported gcc-4.6.4 source tree from verified upstream tarball.

downloading a git-generated archive based on the 'upstream' tag
should provide you with a source tree that is binary identical
to the one extracted from the above tarball.

if you have obtained the source via the command 'git clone',
however, do note that line-endings of files in your working
directory might differ from line-endings of the respective
files in the upstream repository.

1 files changed, 38 insertions, 0 deletions

diff --git a/gcc/testsuite/g++.dg/ipa/devirt-6.C b/gcc/testsuite/g++.dg/ipa/devirt-6.C
new file mode 100644
index 000000000..e9a5d7093
--- /dev/null
+++ b/gcc/testsuite/g++.dg/ipa/devirt-6.C
@@ -0,0 +1,38 @@
+/* Verify that we either do not do any devirtualization or correctly
+   spot that foo changes the dynamic type of the passed object.  */
+
+/* { dg-do run } */
+/* { dg-options "-O3"  } */
+
+extern "C" void abort (void);
+extern "C" void *malloc(__SIZE_TYPE__);
+
+inline void* operator new(__SIZE_TYPE__, void* __p) throw() { return __p;}
+
+int x;
+
+class A {
+public:
+   virtual ~A() { }
+};
+
+class B : public A {
+public:
+   virtual ~B() { if (x == 1) abort (); x = 1; }
+};
+
+void __attribute__((noinline,noclone)) foo (void *p)
+{
+ B *b = reinterpret_cast<B *>(p);
+ b->~B();
+ new (p) A;
+}
+
+int main()
+{
+ void *p = __builtin_malloc (sizeof (B));
+ new (p) B;
+ foo(p);
+ reinterpret_cast<A *>(p)->~A();
+ return 0;
+}