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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - "stopped" notification for the exec-finish GDB/MI command gives the wrong reason"
href="https://llvm.org/bugs/show_bug.cgi?id=23248">23248</a>
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<th>Summary</th>
<td>"stopped" notification for the exec-finish GDB/MI command gives the wrong reason
</td>
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<th>Product</th>
<td>lldb
</td>
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<th>Version</th>
<td>unspecified
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Linux
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>All Bugs
</td>
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<th>Assignee</th>
<td>lldb-dev@cs.uiuc.edu
</td>
</tr>
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<th>Reporter</th>
<td>vadim.macagon@gmail.com
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
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<div>
<pre>Created <span class=""><a href="attachment.cgi?id=14209" name="attach_14209" title="Source for test executable">attachment 14209</a> <a href="attachment.cgi?id=14209&action=edit" title="Source for test executable">[details]</a></span>
Source for test executable
The -exec-finish MI command is used to step out of the current function (see
<<a href="https://sourceware.org/gdb/onlinedocs/gdb/GDB_002fMI-Program-Execution.html#GDB_002fMI-Program-Execution">https://sourceware.org/gdb/onlinedocs/gdb/GDB_002fMI-Program-Execution.html#GDB_002fMI-Program-Execution</a>>).
When this command completes and execution stops GDB sends out:
*stopped,reason="function-finished"...
However the LLDB MI driver sends out:
*stopped,reason="end-stepping-range"...
Furthermore, GDB sends the return value of the function in the notification
(unless the function returns void) while the LLDB MI driver does not. Here's a
sample notification sent out when stepping out of a function that returns an
int.
GDB-MI:
*stopped,reason="function-finished",frame={addr="0x0000000000400828",func="printNextInt",args=[],file="../test/test_target.cpp",fullname="/media/sf_dbgmits/test/test_target.cpp",line="11"},gdb-result-var="$1",return-value="0",thread-id="1",stopped-threads="all",core="0"
LLDB-MI:
*stopped,reason="end-stepping-range",frame={addr="0x0000000000400828",func="printNextInt()",args=[],file="test_target.cpp",fullname="/media/sf_dbgmits/build/../test/test_target.cpp",line="11"},thread-id="1",stopped-threads="all"
I've attached the source file of the program I've used for testing, once built
the above notifications can be obtained by launching LLDB-MI (lldb-mi
--interpreter) or GDB-MI (gdb --interpreter mi) and entering the following
commands:
-file-exec-and-symbols path/to/test_target
-break-insert getNextInt
-exec-run
-exec-finish
GDB: GNU gdb (Ubuntu 7.8-1ubuntu4) 7.8.0.20141001-cvs
LLDB: lldb version 3.7.0 (<a href="https://github.com/llvm-mirror/lldb.git">https://github.com/llvm-mirror/lldb.git</a>
revision 8733ed3778e9787602521c4b1f491d7da6eb5b04
clang revision 13756eaa7c29673267fd20651a56883335dca123
llvm revision 2c5bf601c34780d431cf652e436ef39030ff9213)</pre>
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