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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Clang will write absolute paths into DW_AT_GNU_dwo_name even with -fdebug-prefix-map / -fdebug-compilation-dir ."
href="https://bugs.llvm.org/show_bug.cgi?id=43502">43502</a>
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<th>Summary</th>
<td>Clang will write absolute paths into DW_AT_GNU_dwo_name even with -fdebug-prefix-map / -fdebug-compilation-dir .
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<th>Product</th>
<td>new-bugs
</td>
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<th>Version</th>
<td>trunk
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<th>Hardware</th>
<td>PC
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<th>OS</th>
<td>Linux
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>enhancement
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<th>Priority</th>
<td>P
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<th>Component</th>
<td>new bugs
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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<th>Reporter</th>
<td>cbiesinger@google.com
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<th>CC</th>
<td>htmldeveloper@gmail.com, llvm-bugs@lists.llvm.org
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<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=22602" name="attach_22602" title="testcase script">attachment 22602</a> <a href="attachment.cgi?id=22602&action=edit" title="testcase script">[details]</a></span>
testcase script
Tested using Chrome's clang, which is trunk.
$clang -fdiagnostics-color=never -gsplit-dwarf
-fdebug-prefix-map=$dir=\$ORIGIN -c -o $dir/outputs/foo.o $dir/inputs/foo.c
$clang $dir/outputs/foo.o -fdiagnostics-color=never -gsplit-dwarf
-fdebug-prefix-map=$dir=\$ORIGIN -lm -o $dir/outputs/foo
$ readelf --debug-dump /tmp/outputs/foo
[...]
<10> DW_AT_comp_dir : (indirect string, offset: 0x0): $ORIGIN
<14> DW_AT_GNU_pubnames: 1
<14> DW_AT_GNU_dwo_name: (indirect string, offset: 0x8):
/tmp/outputs/foo.dwo
[...]
See attached script that creates this testcase. Using clang from chrome trunk
as of Sep 24 (same result as clang-8)
The expected result is that DW_AT_GNU_dwo_name is $ORIGIN/outputs/foo.dwo.
Same result if I use '-fdebug-compilation-dir .</pre>
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