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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - -Wframe-larger-than reporting should be improved"
href="http://llvm.org/bugs/show_bug.cgi?id=18759">18759</a>
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<th>Summary</th>
<td>-Wframe-larger-than reporting should be improved
</td>
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<th>Product</th>
<td>clang
</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>All
</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>C++
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
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<th>Reporter</th>
<td>qcolombet@apple.com
</td>
</tr>
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<th>CC</th>
<td>dgregor@apple.com, llvmbugs@cs.uiuc.edu
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=12021" name="attach_12021" title="A C++ file to reproduce the mangled reporting.">attachment 12021</a> <a href="attachment.cgi?id=12021&action=edit" title="A C++ file to reproduce the mangled reporting.">[details]</a></span>
A C++ file to reproduce the mangled reporting.
In r200931, we wired-up the LLVM diagnostic system into clang diagnostic
system.
However, the reported diagnostic needs more work.
Indeed, when compiling C++ code (or more generally languages that mangle
function names), the diagnostic reports mangled name as they appear in the
backend.
Moreover, no location is attached to that mangled name.
* To reproduce
clang++ -mllvm -warn-stack-size=0 bar.cpp -o bar.s -S
* Result
warning: stack size exceeded (8) in _Z9function1f [-Wframe-larger-than]
warning: stack size exceeded (8) in _Z9function1i [-Wframe-larger-than]
* Expected result
warning: bar.cpp Line 1: stack size exceeded (8) in function1
[-Wframe-larger-than]
warning: bar.cpp Line 5: stack size exceeded (8) in function1
[-Wframe-larger-than]
* Note
The need of the backend switch (-mllvm -warn-stack-size=0) is currently tracked
in <a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [Linux kernel] unknown warning option: -Wframe-larger-than=2048"
href="show_bug.cgi?id=4072">http://llvm.org/bugs/show_bug.cgi?id=4072</a></pre>
</div>
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