ARMAsmParser: Plug a leak.

Using an object to do the cleanup may look like overkill, but it's safer and nicer than putting deletes everywhere.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187696 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/ARM/AsmParser/ARMAsmParser.cpp b/lib/Target/ARM/AsmParser/ARMAsmParser.cpp
index c2f6bf325417fd99949fc8ae59334f1e18366d04..80e5c6edb4cee502142904484d021103c56ace47 100644 (file)
--- a/lib/Target/ARM/AsmParser/ARMAsmParser.cpp
+++ b/lib/Target/ARM/AsmParser/ARMAsmParser.cpp
@@ -8009,11 +8009,19 @@ bool ARMAsmParser::parseDirectiveRegSave(SMLoc L, bool IsVector) {
   if (HandlerDataLoc.isValid())
     return Error(L, ".save or .vsave must precede .handlerdata directive");
 
+  // RAII object to make sure parsed operands are deleted.
+  struct CleanupObject {
+    SmallVector<MCParsedAsmOperand *, 1> Operands;
+    ~CleanupObject() {
+      for (unsigned I = 0, E = Operands.size(); I != E; ++I)
+        delete Operands[I];
+    }
+  } CO;
+
   // Parse the register list
-  SmallVector<MCParsedAsmOperand*, 1> Operands;
-  if (parseRegisterList(Operands))
+  if (parseRegisterList(CO.Operands))
     return true;
-  ARMOperand *Op = (ARMOperand*)Operands[0];
+  ARMOperand *Op = (ARMOperand*)CO.Operands[0];
   if (!IsVector && !Op->isRegList())
     return Error(L, ".save expects GPR registers");
   if (IsVector && !Op->isDPRRegList())