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From: "niteria at gmail dot com" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/59374] New: -ftree-slp-vectorize breaks unique_ptr's move constructor Date: Tue, 03 Dec 2013 00:02:00 -0000 [thread overview] Message-ID: <bug-59374-4@http.gcc.gnu.org/bugzilla/> (raw) http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59374 Bug ID: 59374 Summary: -ftree-slp-vectorize breaks unique_ptr's move constructor Product: gcc Version: 4.8.1 Status: UNCONFIRMED Severity: normal Priority: P3 Component: tree-optimization Assignee: unassigned at gcc dot gnu.org Reporter: niteria at gmail dot com Created attachment 31358 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=31358&action=edit result of -save-temps Test file (SmallCore.cpp): #include <memory> #include <iostream> using namespace std; class Foo {}; class Bar : public Foo {}; struct StlAllocator { StlAllocator() : alloc_(nullptr) {} explicit StlAllocator(void* p) : alloc_(p) {} void* alloc_; }; struct BarDelete : public StlAllocator { void operator()(void*) const {} }; struct FooDelete : public StlAllocator { FooDelete() = default; /* implicit */ FooDelete(const BarDelete& other) : StlAllocator(other.alloc_) {} void operator()(void*) const {} }; unique_ptr<Bar, BarDelete> myalloc() { return unique_ptr<Bar, BarDelete>(new Bar); } void fun(const unique_ptr<Foo, FooDelete>& foo) { cout << "fun " << foo.get() << endl; } int main(int, char **) { std::unique_ptr<Foo, FooDelete> foo; std::unique_ptr<Bar, BarDelete> bar = myalloc(); foo = std::move(bar); auto p = foo.get(); cout << "p " << p << endl; if (p != foo.get()) { cout << "wtf" << endl; abort(); } fun(foo); return 0; } Compiled with: g++ -std=c++11 -O -ftree-slp-vectorize SmallCore.cpp Produces: $ ./a.out p 0x602010 wtf Aborted Expected result (up to pointer address): $ ./a.out p 0x602010 fun 0x602010 Gcc versions: Target: x86_64-unknown-linux-gnu Configured with: ./configure --prefix=/data/users/bnitka/prefix/ --with-ppl --with-cloog --enable-bootstrap --enable-shared --enable-threads=posix --enable-checking=release --with-system-zlib --enable-__cxa_atexit --disable-libunwind-exceptions --enable-languages=c,c++ --disable-gnu-unique-object --enable-linker-build-id --with-gnu-as --with-gnu-ld --disable-multilib --enable-libstdcxx-time Thread model: posix gcc version 4.8.1 (GCC) Target: x86_64-unknown-linux-gnu Configured with: ./configure --prefix=/data/users/bnitka/prefix/ --with-ppl --with-cloog --enable-bootstrap --enable-shared --enable-threads=posix --enable-checking=release --with-system-zlib --enable-__cxa_atexit --disable-libunwind-exceptions --enable-languages=c,c++ --disable-gnu-unique-object --enable-linker-build-id --with-gnu-as --with-gnu-ld --disable-multilib --enable-libstdcxx-time Thread model: posix gcc version 4.9.0 20131202 (experimental) (GCC) Works on: gcc-4.7.1
next reply other threads:[~2013-12-03 0:02 UTC|newest] Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top 2013-12-03 0:02 niteria at gmail dot com [this message] 2013-12-03 9:23 ` [Bug tree-optimization/59374] [4.8/4.9 Regression] " rguenth at gcc dot gnu.org 2013-12-03 11:40 ` rguenth at gcc dot gnu.org 2013-12-03 11:47 ` rguenth at gcc dot gnu.org 2013-12-03 13:02 ` rguenth at gcc dot gnu.org 2013-12-05 9:12 ` rguenth at gcc dot gnu.org 2013-12-05 9:24 ` [Bug tree-optimization/59374] [4.8 " rguenth at gcc dot gnu.org 2014-01-10 9:34 ` [Bug tree-optimization/59374] [4.7/4.8/4.9 " rguenth at gcc dot gnu.org 2014-01-10 10:53 ` rguenth at gcc dot gnu.org 2014-01-10 13:08 ` rguenth at gcc dot gnu.org 2014-01-10 13:08 ` [Bug tree-optimization/59374] [4.7/4.8 " rguenth at gcc dot gnu.org 2014-05-22 9:06 ` rguenth at gcc dot gnu.org 2014-09-17 16:37 ` [Bug tree-optimization/59374] [4.8 " paolo.carlini at oracle dot com 2014-12-10 12:51 ` rguenth at gcc dot gnu.org 2014-12-19 13:34 ` jakub at gcc dot gnu.org 2015-06-23 8:47 ` rguenth at gcc dot gnu.org
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