diff options
| author | Douglas Gregor <dgregor@apple.com> | 2010-05-14 21:31:02 +0000 |
|---|---|---|
| committer | Douglas Gregor <dgregor@apple.com> | 2010-05-14 21:31:02 +0000 |
| commit | 69cfeb1036ad22c911b7243dca0eecee72e452d3 (patch) | |
| tree | e790024af8797d154639a061a3d052fd0ac37722 /lib/CodeGen | |
| parent | 8e0ac174c8c8c980927b3e1447f16f62fbe2a2e4 (diff) | |
Emit an lvalue dynamic_cast even if the result is not used. Another
part (or possibly all) of PR7132.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@103810 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen')
| -rw-r--r-- | lib/CodeGen/CGExprAgg.cpp | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/lib/CodeGen/CGExprAgg.cpp b/lib/CodeGen/CGExprAgg.cpp index ce9ad4886f..5a1516cf32 100644 --- a/lib/CodeGen/CGExprAgg.cpp +++ b/lib/CodeGen/CGExprAgg.cpp @@ -178,7 +178,7 @@ void AggExprEmitter::EmitFinalDestCopy(const Expr *E, LValue Src, bool Ignore) { //===----------------------------------------------------------------------===// void AggExprEmitter::VisitCastExpr(CastExpr *E) { - if (!DestPtr) { + if (!DestPtr && E->getCastKind() != CastExpr::CK_Dynamic) { Visit(E->getSubExpr()); return; } @@ -186,6 +186,20 @@ void AggExprEmitter::VisitCastExpr(CastExpr *E) { switch (E->getCastKind()) { default: assert(0 && "Unhandled cast kind!"); + case CastExpr::CK_Dynamic: { + assert(isa<CXXDynamicCastExpr>(E) && "CK_Dynamic without a dynamic_cast?"); + LValue LV = CGF.EmitCheckedLValue(E->getSubExpr()); + // FIXME: Do we also need to handle property references here? + if (LV.isSimple()) + CGF.EmitDynamicCast(LV.getAddress(), cast<CXXDynamicCastExpr>(E)); + else + CGF.CGM.ErrorUnsupported(E, "non-simple lvalue dynamic_cast"); + + if (DestPtr) + CGF.CGM.ErrorUnsupported(E, "lvalue dynamic_cast with a destination"); + break; + } + case CastExpr::CK_ToUnion: { // GCC union extension QualType PtrTy = |