Bug 12374 - ld fails to convert global hidden symbols to local ones
Summary: ld fails to convert global hidden symbols to local ones
Status: RESOLVED INVALID
Alias: None
Product: binutils
Classification: Unclassified
Component: ld (show other bugs)
Version: 2.21
: P2 normal
Target Milestone: ---
Assignee: unassigned
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2011-01-07 16:24 UTC by Jan Beulich
Modified: 2011-02-14 08:05 UTC (History)
1 user (show)

See Also:
Host:
Target:
Build:
Last reconfirmed:

Attachments
trivial example (49 bytes, application/octet-stream)
2011-01-07 16:24 UTC, Jan Beulich 		Details
View All Add an attachment (proposed patch, testcase, etc.)

Note You need to log in before you can comment on or make changes to this bug.
Description Jan Beulich 2011-01-07 16:24:06 UTC 
Created attachment 5183 [details]
trivial example

The version of the spec I have says "A hidden symbol contained in a relocatable object must be either removed or converted to STB_LOCAL binding by the link-editor when the relocatable object is included in an executable file or shared object." Nevertheless I see global hidden symbols in executables.

Attaching a trivial sample, to be run through

as -o hidden.o hidden.s
ld -o hidden hidden.o
objdump -t hidden
Comment 1 Alan Modra 2011-02-14 00:24:03 UTC 
I think this is really just a weakness in the gabi spec.  The symbol table that matters for correct implementation of hidden symbols is the dynamic symbol table.  GNU ld does remove hidden symbols from .dynsym.
Comment 2 Jan Beulich 2011-02-14 08:05:14 UTC 
Indeed, as was clarified on the mailing list.