Make APInt::countLeadingZerosSlowCase() treat the contents of padding bits
as undefined.  Fixes an assertion in APFloat::toString noticed by Dale.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95196 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/unittests/ADT/APFloatTest.cpp b/unittests/ADT/APFloatTest.cpp
index 76cdafc..b02cc3e 100644
--- a/unittests/ADT/APFloatTest.cpp
+++ b/unittests/ADT/APFloatTest.cpp
@@ -333,6 +333,8 @@
   ASSERT_EQ("1.01E-2", convertToString(1.01E-2, 5, 1));
   ASSERT_EQ("0.7853981633974483", convertToString(0.78539816339744830961, 0, 3));
   ASSERT_EQ("4.940656458412465E-324", convertToString(4.9406564584124654e-324, 0, 3));
+  ASSERT_EQ("873.1834", convertToString(873.1834, 0, 1));
+  ASSERT_EQ("8.731834E+2", convertToString(873.1834, 0, 0));
 }
 
 #ifdef GTEST_HAS_DEATH_TEST