From 554fd8c5195424bdbcabf5de30fdc183aba391bd Mon Sep 17 00:00:00 2001 From: upstream source tree Date: Sun, 15 Mar 2015 20:14:05 -0400 Subject: obtained gcc-4.6.4.tar.bz2 from upstream website; 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. --- gcc/testsuite/g++.dg/ipa/devirt-6.C | 38 +++++++++++++++++++++++++++++++++++++ 1 file changed, 38 insertions(+) create mode 100644 gcc/testsuite/g++.dg/ipa/devirt-6.C (limited to 'gcc/testsuite/g++.dg/ipa/devirt-6.C') 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(p); + b->~B(); + new (p) A; +} + +int main() +{ + void *p = __builtin_malloc (sizeof (B)); + new (p) B; + foo(p); + reinterpret_cast(p)->~A(); + return 0; +} -- cgit v1.2.3