AsmPrinter.cpp: Avoid crashes for targeting like "arm-mingw32". CurrentFnSym might...

llvm-svn: 239692

diff --git a/llvm/lib/CodeGen/AsmPrinter/AsmPrinter.cpp b/llvm/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
index cb8aa72..85ee9b3 100644 (file)
--- a/llvm/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
+++ b/llvm/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
@@ -902,7 +902,8 @@ void AsmPrinter::EmitFunctionBody() {
     const MCExpr *SizeExp = MCBinaryExpr::createSub(
         MCSymbolRefExpr::create(CurrentFnEnd, OutContext),
         MCSymbolRefExpr::create(CurrentFnSymForSize, OutContext), OutContext);
-    OutStreamer->emitELFSize(cast<MCSymbolELF>(CurrentFnSym), SizeExp);
+    if (auto Sym = dyn_cast<MCSymbolELF>(CurrentFnSym))
+      OutStreamer->emitELFSize(Sym, SizeExp);
   }
 
   for (const HandlerInfo &HI : Handlers) {