xsc351072127 commented on PR #2952:
URL: https://github.com/apache/thrift/pull/2952#issuecomment-2254879003
Thanks for reply, I will try to create a issue in Thrift JIRA.
I can provide more infomation about these isse.
1.Yes my production environment is RHEL7 for an old financial system. So I
have no choose to use Centos7 and old version gcc
toolchain because libc and other runtime in OS. I have strictly followed
the "Language requirements" page to build Thtift.
2.I struggle try to know what happen with my compile.
I read a lots of cpp's initialization syntax:
https://en.cppreference.com/w/cpp/language/initialization
https://en.cppreference.com/w/cpp/language/aggregate_initialization
https://en.cppreference.com/w/cpp/language/copy_constructor
(....WTF)
And do some search with some key world, I got a gcc buy bugzilla may be
related, but I am not sure:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53361
I do the minimum reproduction. try the godbolt to get the IR tree. with the
compile options:--std=c++11 -Wall -fno-elide-constructors
```
class uuid
{
public:
//should not declared user constructors
uuid() = default;
int data[16];
};
int main()
{
uuid uuu;
uuid u{uuu};
}
```
https://godbolt.org/z/ehdr1bj5P
For gcc5 and later version compile, will call the default copy constructor
create by compiler, but for gcc4.x will get a compile error.
I do not why, but this is the phenomenon.
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