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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Assertion triggered in MCSymbol when redefining symbol with .set after a use"
href="https://llvm.org/bugs/show_bug.cgi?id=28462">28462</a>
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<th>Summary</th>
<td>Assertion triggered in MCSymbol when redefining symbol with .set after a use
</td>
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<th>Product</th>
<td>libraries
</td>
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<th>Version</th>
<td>trunk
</td>
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<th>Hardware</th>
<td>All
</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>
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<th>Priority</th>
<td>P
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<th>Component</th>
<td>MC
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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<th>Reporter</th>
<td>aaron.smith@microsoft.com
</td>
</tr>
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org
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<th>Classification</th>
<td>Unclassified
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</tr></table>
<p>
<div>
<pre>This test case triggers an assertion in MCSymbol::setVariableValue because the
second .set directive redefines a symbol that was previously used.
save7:
.set _FpSaved, 7
.long _FpSaved
saveA:
.set _FpSaved, 0xa
.long _FpSaved
I believe this is okay. If I change the assert to check if the variable
IsRedefinable or not (as below), the test assembles and the values are encoded
as expected.
void MCSymbol::setVariableValue(const MCExpr *Value) {
assert((!IsUsed || IsRedefinable) && "Cannot set a variable that has already
been used.");</pre>
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</p>
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