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[Bug dynamic-link/21041] Fix for bug 20019 causes linker errors for shared libraries using longjmp
- From: "fweimer at redhat dot com" <sourceware-bugzilla at sourceware dot org>
- To: glibc-bugs at sourceware dot org
- Date: Thu, 12 Jan 2017 16:09:26 +0000
- Subject: [Bug dynamic-link/21041] Fix for bug 20019 causes linker errors for shared libraries using longjmp
- Auto-submitted: auto-generated
- References: <bug-21041-131@http.sourceware.org/bugzilla/>
https://sourceware.org/bugzilla/show_bug.cgi?id=21041
Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
CC| |fweimer at redhat dot com
See Also| |https://sourceware.org/bugz
| |illa/show_bug.cgi?id=20489
Resolution|--- |INVALID
Flags| |security-
--- Comment #1 from Florian Weimer <fweimer at redhat dot com> ---
The bug is here:
$ ld.gold -shared -z now -o libbar.so bar.o
You must link against the relevant glibc DSOs if you use symbols from glibc,
otherwise the resulting shared object is undefined.
If you don't do that, your DSO will not be future-proof, and you can run into
issues like bug 20489 after a glibc upgrade.
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