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[Bug dynamic-link/14979] Incorrect R_386_GLOB_DAT/R_386_JUMP_SLOT handling
- From: "hjl.tools at gmail dot com" <sourceware-bugzilla at sourceware dot org>
- To: glibc-bugs at sourceware dot org
- Date: Fri, 21 Dec 2012 13:39:46 +0000
- Subject: [Bug dynamic-link/14979] Incorrect R_386_GLOB_DAT/R_386_JUMP_SLOT handling
- Auto-submitted: auto-generated
- References: <bug-14979-131@http.sourceware.org/bugzilla/>
http://sourceware.org/bugzilla/show_bug.cgi?id=14979
--- Comment #4 from H.J. Lu <hjl.tools at gmail dot com> 2012-12-21 13:39:46 UTC ---
(In reply to comment #1)
> I'd say it is way too late to do changes like that.
> And, if you even consider those, make sure you won't break e.g. prelink (not
> sure about x86_64, but on i386 you'd definitely break prelink fatally with such
> a change).
I did a quick check. All files under /lib and /bin on 32-bit Fedora 17
have 0 addend for both R_386_GLOB_DAT and R_386_JMP_SLOT. I looked
at prelink source, R_386_GLOB_DAT, R_X86_64_GLOB_DAT and R_X86_64_JMP_SLOT
have zero r_addend. I am not sure about R_386_JMP_SLOT. I will modify
prelink to check addend for both 386 and x86-64. I will run it on both
32bit and 64bit Fedora 17 to see prelink ever generates none-zero addend
for GLOB_DAT and JMP_SLOT.
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