commit 00b34996b49748045e2dd77e4f7ca60c258639e2
author Simon Pilgrim <llvm-dev@redking.me.uk> Mon Mar 20 14:40:12 2017 +0000
committer Simon Pilgrim <llvm-dev@redking.me.uk> Mon Mar 20 14:40:12 2017 +0000
tree da5c6c08879b6d2d2f1f2f8022248250ba4b9950
parent 195f23c53bb09d266b18c24519cf9bd0589972a0

Use MutableArrayRef for APFloat::convertToInteger

As discussed on D31074, use MutableArrayRef for destination integer buffers to help assert before stack overflows happen.

llvm-svn: 298253

llvm/lib/Analysis/ConstantFolding.cpp

diff --git a/llvm/lib/Analysis/ConstantFolding.cpp b/llvm/lib/Analysis/ConstantFolding.cpp
index 85ca622..e6939c0 100644
--- a/llvm/lib/Analysis/ConstantFolding.cpp
+++ b/llvm/lib/Analysis/ConstantFolding.cpp
@@ -1518,9 +1518,9 @@
   bool isExact = false;
   APFloat::roundingMode mode = roundTowardZero? APFloat::rmTowardZero
                                               : APFloat::rmNearestTiesToEven;
-  APFloat::opStatus status = Val.convertToInteger(&UIntVal, ResultWidth,
-                                                  /*isSigned=*/true, mode,
-                                                  &isExact);
+  APFloat::opStatus status =
+      Val.convertToInteger(makeMutableArrayRef(UIntVal), ResultWidth,
+                           /*isSigned=*/true, mode, &isExact);
   if (status != APFloat::opOK &&
       (!roundTowardZero || status != APFloat::opInexact))
     return nullptr;