diff options
| author | Daniel Dunbar <daniel@zuster.org> | 2010-03-14 03:10:40 +0000 |
|---|---|---|
| committer | Daniel Dunbar <daniel@zuster.org> | 2010-03-14 03:10:40 +0000 |
| commit | d3da36286f9ffe6951abec67b82837e432c858cf (patch) | |
| tree | a0fab3b06ff28f2cbc710dd3f5ee7ea492de4af5 /lib/MC/MCExpr.cpp | |
| parent | 7561d480953e0a2faa4af9be0a00b1180097c4bd (diff) | |
| download | external_llvm-d3da36286f9ffe6951abec67b82837e432c858cf.zip external_llvm-d3da36286f9ffe6951abec67b82837e432c858cf.tar.gz external_llvm-d3da36286f9ffe6951abec67b82837e432c858cf.tar.bz2 | |
MC: Fix a crash on invalid, attempting to evaluate undefined symbols.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98464 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/MC/MCExpr.cpp')
| -rw-r--r-- | lib/MC/MCExpr.cpp | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/lib/MC/MCExpr.cpp b/lib/MC/MCExpr.cpp index 8d84f53..3bd6b1b 100644 --- a/lib/MC/MCExpr.cpp +++ b/lib/MC/MCExpr.cpp @@ -195,10 +195,11 @@ bool MCExpr::EvaluateAsRelocatable(MCValue &Res, if (!Sym.getValue()->EvaluateAsRelocatable(Res, Layout)) return false; - // Absolutize symbol differences when we have a layout object and the - // target requests it. + // Absolutize symbol differences between defined symbols when we have a + // layout object and the target requests it. if (Layout && Res.getSymB() && - Layout->getAssembler().getBackend().hasAbsolutizedSet()) { + Layout->getAssembler().getBackend().hasAbsolutizedSet() && + Res.getSymA()->isDefined() && Res.getSymB()->isDefined()) { MCSymbolData &A = Layout->getAssembler().getSymbolData(*Res.getSymA()); MCSymbolData &B = Layout->getAssembler().getSymbolData(*Res.getSymB()); Res = MCValue::get(+ A.getFragment()->getAddress() + A.getOffset() |