https://llvm.org/bugs/show_bug.cgi?id=28462
Bug ID: 28462
Summary: Assertion triggered in MCSymbol when redefining symbol
with .set after a use
Product: libraries
Version: trunk
Hardware: All
OS: All
Status: NEW
Severity: normal
Priority: P
Component: MC
Assignee: unassignedb...@nondot.org
Reporter: aaron.sm...@microsoft.com
CC: llvm-bugs@lists.llvm.org
Classification: Unclassified
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.");
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