------- Comment #1 from pinskia at gmail dot com 2010-03-11 11:41 ------- Subject: Re: New: trivial types are not being statically initialized
Sent from my iPhone On Mar 11, 2010, at 3:24 AM, "eric dot niebler at gmail dot com" <gcc-bugzi...@gcc.gnu.org > wrote: > According to the C++0x status page > (http://gcc.gnu.org/gcc-4.5/cxx0x_status.html), "Standard Layout > Types" > (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2342.htm) > have been > implemented in gcc-4.5. A quick test shows that trivial types are > not being > statically initialized, as the paper requires. The following struct > S is > trivial and the non-local constant s should be statically > initialized, IIUC: > > struct S > { > S() {} > }; The above is not a trivial type though. It has a non trivial default constructor. If you want a trivial constructor use either "= default" or delete it all together. > > S const s{}; > > However, when compiled with -O2 -std=c++0x -S using the latest 4.5 > snapshot, I > see the following assembly: > > .file "main.cpp" > .text > .p2align 4,,15 > .def __GLOBAL__I_main.cpp; .scl 3; .type > 32; .endef > __GLOBAL__I_main.cpp: > pushl %ebp > movl %esp, %ebp > popl %ebp > ret > .section .ctors,"w" > .align 4 > .long __GLOBAL__I_main.cpp > > Unless I'm mistaken, the global s is still being dynamically > initialized. > Apologies in advance if I'm reading this wrong. > > > -- > Summary: trivial types are not being statically initialized > Product: gcc > Version: 4.5.0 > Status: UNCONFIRMED > Severity: normal > Priority: P3 > Component: c++ > AssignedTo: unassigned at gcc dot gnu dot org > ReportedBy: eric dot niebler at gmail dot com > GCC build triplet: gcc-4.5-20100304 > > > http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43330 > -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43330
