<html>
<head>
<base href="https://llvm.org/bugs/" />
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<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - LLDB Linux loses connection to lldb-server unexpectedly when inferior receives SIGSTOP"
href="https://llvm.org/bugs/show_bug.cgi?id=23264">23264</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>LLDB Linux loses connection to lldb-server unexpectedly when inferior receives SIGSTOP
</td>
</tr>
<tr>
<th>Product</th>
<td>lldb
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</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>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>All Bugs
</td>
</tr>
<tr>
<th>Assignee</th>
<td>lldb-dev@cs.uiuc.edu
</td>
</tr>
<tr>
<th>Reporter</th>
<td>vince@nethacker.com
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>vharron@tifa:~/dev/tkill$ cat stop.c
#include <signal.h>
int main()
{
raise(SIGSTOP);
return 138;
}
$ clang-3.5 stop.c
vharron@tifa:~/dev/tkill$ ~/ll/tot/eclipse/bin/lldb
(lldb) file a.out
Current executable set to 'a.out' (x86_64).
(lldb) run
Process 4774 launched: '/usr/local/google/home/vharron/dev/tkill/a.out'
(x86_64)
Process 4774 exited with status = -1 (0xffffffff) lost connection
(lldb)
OSX Behavior (for reference)
vharron-macbookpro:tkill vharron$ lldb a.out
(lldb) target create "a.out"
Current executable set to 'a.out' (x86_64).
(lldb) run
Process 76565 launched: '/Users/vharron/dev/tkill/a.out' (x86_64)
Process 76565 stopped
* thread #1: tid = 0x6d418, 0x00007fff82b9c292 libsystem_kernel.dylib`__kill +
10, queue = 'com.apple.main-thread', stop reason = signal SIGSTOP
frame #0: 0x00007fff82b9c292 libsystem_kernel.dylib`__kill + 10
libsystem_kernel.dylib`__kill + 10:
-> 0x7fff82b9c292: jae 0x7fff82b9c29c ; __kill + 20
0x7fff82b9c294: movq %rax, %rdi
0x7fff82b9c297: jmp 0x7fff82b99175 ; cerror_nocancel
0x7fff82b9c29c: retq
(lldb) cont
Process 76565 resuming
Process 76565 exited with status = 138 (0x0000008a)
(lldb)
Bash behavior:
vharron@tifa:~/dev/tkill$ ./a.out
[1]+ Stopped ./a.out
vharron@tifa:~/dev/tkill$ pgrep a.out
4863
vharron@tifa:~/dev/tkill$ kill -SIGCONT 4863
vharron@tifa:~/dev/tkill$ pgrep a.out
[1]+ Exit 138 ./a.out
vharron@tifa:~/dev/tkill$</pre>
</div>
</p>
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