[Bug ld/25617] ld should reconstruct dynamic symbol table from PT_DYNAMIC when there is no section header

[hjl.tools at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=25617

--- Comment #30 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to Kaylee from comment #27)
> Created attachment 12357 [details]
> testcase for objcopy breakage
> 
> This .so works fine, but if put through objcopy (even without flags),
> objcopy will attempt to copy the program header, and extend the relevant
> PT_LOAD entry to cover the new location. Unfortunately, it does not take
> into account that the endpoints of a loaded region are rounded up to page
> sizes, and as a result it will cause the first page of the second segment to
> overlap the last page of the first segment.
> 
> I don't know if it's trying to create a second header because the .so -> BFD
> -> .so conversion is lossy, or if it's actively trying to modify it, but
> probably it should treat the program header as fixed, since application code
> may depend both on the specific values stored in it and also that the values
> are correct.

It has nothing to do with --remove-section-header.  You get the same result
without --remove-section-header using objcopy on master branch.

-- 
You are receiving this mail because:
You are on the CC list for the bug.