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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Debug information for OpenMP regions is broken"
href="https://bugs.llvm.org/show_bug.cgi?id=33676">33676</a>
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<th>Summary</th>
<td>Debug information for OpenMP regions is broken
</td>
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<th>Product</th>
<td>OpenMP
</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>
</tr>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>Clang Compiler Support
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>hahnjo@hahnjo.de
</td>
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
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<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=18743" name="attach_18743" title="Simple tasking program">attachment 18743</a> <a href="attachment.cgi?id=18743&action=edit" title="Simple tasking program">[details]</a></span>
Simple tasking program
For the simple attached tasking program, llvm-ir generated with:
clang -fopenmp task.c -S -emit-llvm -g
generates DILocation entries for the outlined OpenMP regions, that refer to
line 0. As a result, tools like addr2line and gdb fail to resolve the source
line for the OpenMP regions.
For the attached code compiled with Clang 4.0.1, gdb can set a breakpoint in
the task region, but then fails to resolve the source line:
$ clang -fopenmp task.c -g
$ gdb ./a.out
(gdb) b 13
(gdb) r
Breakpoint 1, 0x0000000000400a5d in .omp_task_entry. ()
(gdb) s
Single stepping until exit from function .omp_task_entry.,
which has no line number information.
With current trunk, it can't even stop at line 13. Instead, the breakpoint is
hit right after the task construct.
Report by Joachim Protze.</pre>
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