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[Bug nptl/2419] New: broken .eh_frame for one argument syscalls.
- From: "dwhedon at debian dot org" <sourceware-bugzilla at sourceware dot org>
- To: glibc-bugs at sources dot redhat dot com
- Date: 5 Mar 2006 23:50:52 -0000
- Subject: [Bug nptl/2419] New: broken .eh_frame for one argument syscalls.
- Reply-to: sourceware-bugzilla at sourceware dot org
The .eh_frame sections for the nptl single argument syscalls (close and fsync)
in glibc 2.3.6 are being created incorrectly. Valgrind compains about this, as
discussed here:
http://sourceforge.net/mailarchive/forum.php?thread_id=7568951&forum_id=32038
valgrind emits the message:
DWARF2 CFI reader: unhandled CFI instruction 0:50
on startup of every program linking to the offending object. This
creates a lot of noise.
readelf agrees that there is a problem with the sections:
$ readelf --debug-dump=frames /lib/tls/libc.so.6 > /dev/null
unsupported or unknown DW_CFA_50
unsupported or unknown DW_CFA_50
$
The patch I will attach shortly fixes the problem. At least the error message
goes away and to me the CFI instructions now look correct.
FWIW, I noticed the problem on Debian stable (sarge) and current unstable (sid)
but it doesn't look like a Debian only issue.
--
Summary: broken .eh_frame for one argument syscalls.
Product: glibc
Version: 2.3.6
Status: NEW
Severity: normal
Priority: P2
Component: nptl
AssignedTo: drepper at redhat dot com
ReportedBy: dwhedon at debian dot org
CC: glibc-bugs at sources dot redhat dot com
GCC host triplet: i686-pc-linux-gnu
http://sourceware.org/bugzilla/show_bug.cgi?id=2419
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