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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - clang-diff Ignores #defines in its outputs"
href="https://bugs.llvm.org/show_bug.cgi?id=35097">35097</a>
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<th>Summary</th>
<td>clang-diff Ignores #defines in its outputs
</td>
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<th>Product</th>
<td>clang
</td>
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<th>Version</th>
<td>trunk
</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>enhancement
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>-New Bugs
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>gamblejr@msoe.edu
</td>
</tr>
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
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<p>
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<pre>Created <span class=""><a href="attachment.cgi?id=19347" name="attach_19347" title="Zip file with described files">attachment 19347</a> <a href="attachment.cgi?id=19347&action=edit" title="Zip file with described files">[details]</a></span>
Zip file with described files
Note that I have attached a zip file with four files in it.
In summery the files work0.cpp and work1.cpp when diffed with clang-diff
produce the expected output. But when I feed it fail0.cpp and fail1.cpp to
diff it tells me that there are no differences.
If I use clang-diff with the following arguments:
clang-diff work0.cpp work1.cpp --
I get the following output:
Update CompoundAssignOperator: ^=(8) to &=
Insert UnaryOperator: ~(10) into CompoundAssignOperator: &=(8) at 1
Insert ParenExpr(11) into UnaryOperator: ~(10) at 0
Move BinaryOperator: <<(12) into ParenExpr(11) at 0
This is what I would expect.
When I use clang-diff on the other two files like so:
clang-diff fail0.cpp fail1.cpp --
The only difference between the "fail" files and the "work" files is the fact
that in the work files I have a volatile variable defined:
volatile unsigned char PORT = 12;
while in the fail files I have a macro like this:
#define PORT (*(unsigned char volatile * )0x1000)
All four files compile fine with clang and no arguments given otherwise.</pre>
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