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[Bug dynamic-link/13945] New: RUNPATH behaviour is not transitive
- From: "mitya at mageia dot org" <sourceware-bugzilla at sourceware dot org>
- To: glibc-bugs at sources dot redhat dot com
- Date: Wed, 04 Apr 2012 19:55:27 +0000
- Subject: [Bug dynamic-link/13945] New: RUNPATH behaviour is not transitive
- Auto-submitted: auto-generated
http://sourceware.org/bugzilla/show_bug.cgi?id=13945
Bug #: 13945
Summary: RUNPATH behaviour is not transitive
Product: glibc
Version: 2.15
Status: NEW
Severity: normal
Priority: P2
Component: dynamic-link
AssignedTo: unassigned@sourceware.org
ReportedBy: mitya@mageia.org
Classification: Unclassified
If only DT_RPATH is used, the DSO chain is traced up to the root (normally an
executable), and thus DT_RPATH of the root module is honoured. With DT_RUNPATH,
it is not; see _dl_map_object in elf/dl-load.c.
That's why if DT_RUNPATH is present, indirect DSO loading from a non-standard
path won't work, for example, if using GModule from GLib. (Even if the correct
DT_RPATH is present, it will be overridden and invalidated by DT_RUNPATH.)
GNOME bug #670477 is an example of such situation. In order to make shell
extensions load, we need to make sure that the "--enable-new-dtags" ld flag is
not used.
https://bugzilla.gnome.org/show_bug.cgi?id=670477
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