[Bug ld/29973] x86_64-w64-mingw32-g++ ld: helloworld.exe:.rdata_r: section below image base for windows

[euloanty at live dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=29973

--- Comment #35 from cqwrteur <euloanty at live dot com> ---
(In reply to Nick Clifton from comment #32)
> Hi,
> 
>   I am wondering if there are two problems here, rather than just one.  So
> please could you check a couple of things for me ?
> 
>   1. Does iostream.exe fail to run if built without LTO ?
>   2. Where does iostream.exe fail ?  Is it before main(), or when the
> libstdc++ library is being loaded, or somewhere else ?
> 
> Thanks
>   Nick

I have tried. Looks like this issue only happens when iostream is included
since iostream has a static global variable that causes issues.

https://github.com/gcc-mirror/gcc/blob/07f497c2da3600cc99cd7d1b5c6726972fb2b5a1/libstdc%2B%2B-v3/include/std/iostream#L78

https://github.com/gcc-mirror/gcc/blob/ec59848074ba8c4310cbadb603822bfaeff03a32/libstdc%2B%2B-v3/src/c%2B%2B98/ios_base_init.h

#if __has_attribute(init_priority)
static ios_base::Init __ioinit __attribute__((init_priority(90)));
#endif

It has this new init_priority attribute. Perhaps ld fails to understand PE
targets while lld does?

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