http://sourceware.org/bugzilla/show_bug.cgi?id=13125
Bug #: 13125
Summary: readelf does not exit 0 when DWARF information
requested but none present
Product: binutils
Version: 2.22 (HEAD)
Status: NEW
Severity: normal
Priority: P2
Component: binutils
AssignedTo: [email protected]
ReportedBy: [email protected]
Classification: Unclassified
If you request DWARF data from a file using readelf (for example using -wi) and
it does not exist, readelf exits with status 0 rather than an error. I've
reproduced this going pretty far back in binutils (back to whatever was shipped
in RHEL5) and all the way up to current HEAD. It also provides no diagnostic
information to indicate that there is no information to display.
$ ./readelf -wi /bin/ls
$ echo $?
0
$ ./readelf --version
GNU readelf (GNU Binutils) 2.21.53.20110823
Copyright 2011 Free Software Foundation, Inc.
This program is free software; you may redistribute it under the terms of
the GNU General Public License version 3 or (at your option) any later version.
This program has absolutely no warranty.
$
Reference the elfutils version of readelf, which does both of these things:
$ eu-readelf -winfo /bin/ls
eu-readelf: cannot get debug context descriptor: No DWARF information found
$ echo $?
1
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