[PATCH] PR ld/19636: [x86] Resolve undefweak and defined symbols in executable

[H.J. Lu]

On Thu, Feb 25, 2016 at 10:59 AM, H.J. Lu <hjl.tools@gmail.com> wrote:
> Here is the updated patch I am testing.  The linker behavior is changed
> in 2 cases when creating executable:
>
> 1. When there are mixed PIC and non-PIC references to undefined
> weak symbols, undefined weak symbols are resolved to 0 at link-time.
> 2. If all references to undefined weak symbols are PIC, dynamic
> relocations against undefined weak symbols will be generated unless
> -z nodynamic-undefined-weak is passed to linker.
>
> BTW,  We have to resolve R_X86_64_32/R_X86_64_PC32 relocations
> against undefined weak symbols to zero.  Otherwise, we will get run-time
> relocation overflow for dynamic R_X86_64_32/R_X86_64_PC32 relocations.
>

This is what I am checking in.


-- 
H.J.
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