<html>
<head>
<base href="https://bugs.llvm.org/">
</head>
<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - --only-keep-debug crash with no section header table"
href="https://bugs.llvm.org/show_bug.cgi?id=50160">50160</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>--only-keep-debug crash with no section header table
</td>
</tr>
<tr>
<th>Product</th>
<td>tools
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
<tr>
<th>OS</th>
<td>Linux
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>enhancement
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>llvm-objcopy/strip
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>rupprecht@google.com
</td>
</tr>
<tr>
<th>CC</th>
<td>alexander.v.shaposhnikov@gmail.com, jake.h.ehrlich@gmail.com, jh7370.2008@my.bristol.ac.uk, llvm-bugs@lists.llvm.org, rupprecht@google.com
</td>
</tr></table>
<p>
<div>
<pre>Found this on an internal binary. llvm-objcopy --only-keep-debug crashes here,
although the input file is weird -- we should probably have a similar error
message as GNU objcopy.
$ cat /tmp/x.yaml
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_EXEC
Sections:
- Name: .foo
Type: SHT_PROGBITS
Flags: [ SHF_ALLOC ]
Size: 0x01000
ProgramHeaders:
- Type: PT_NULL
Flags: [ ]
FileSize: 0x01000
$ bin/yaml2obj /tmp/x.yaml > /tmp/x.o
$ bin/llvm-strip --strip-sections /tmp/x.o
$ bin/llvm-objcopy --only-keep-debug /tmp/x.o /tmp/y.o
<crash>
$ objcopy /tmp/x.o /tmp/y.o # Note: GNU objcopy
objcopy: error: the input file '/tmp/x.o' has no sections</pre>
</div>
</p>
<hr>
<span>You are receiving this mail because:</span>
<ul>
<li>You are on the CC list for the bug.</li>
</ul>
</body>
</html>