diff --git a/llvm/lib/AsmParser/llvmAsmParser.y b/llvm/lib/AsmParser/llvmAsmParser.y
index 571fc4e..c8304d7 100644
--- a/llvm/lib/AsmParser/llvmAsmParser.y
+++ b/llvm/lib/AsmParser/llvmAsmParser.y
@@ -1657,6 +1657,7 @@
       E = $8->end();
     for (; I != E; ++I)
       S->addCase(I->first, I->second);
+    delete $8;
   }
   | SWITCH IntType ValueRef ',' LABEL ValueRef '[' ']' {
     SwitchInst *S = new SwitchInst(getVal($2, $3),