Initialize pointer in string conversion helpers to prevent MSAN diagnostic.

Since the initialization of the pointer happens across the libc library boundry
MSAN will not know the pointer was initialized. This fixes MSAN failures in
test/strings/string.conversions.

llvm-svn: 222052

1 files changed, 2 insertions, 2 deletions

diff --git a/libcxx/src/string.cpp b/libcxx/src/string.cpp
index fdaad292734..febc5320997 100644
--- a/libcxx/src/string.cpp
+++ b/libcxx/src/string.cpp
@@ -63,7 +63,7 @@ inline
 V
 as_integer_helper(const string& func, const S& str, size_t* idx, int base, F f)
 {
-    typename S::value_type* ptr;
+    typename S::value_type* ptr = nullptr;
     const typename S::value_type* const p = str.c_str();
     typename remove_reference<decltype(errno)>::type errno_save = errno;
     errno = 0;
@@ -180,7 +180,7 @@ inline
 V
 as_float_helper(const string& func, const S& str, size_t* idx, F f )
 {
-    typename S::value_type* ptr;
+    typename S::value_type* ptr = nullptr;
     const typename S::value_type* const p = str.c_str();
     typename remove_reference<decltype(errno)>::type errno_save = errno;
     errno = 0;