Fix uninitialized values and bad enum conversions found by UBSAN.

llvm-svn: 237738

4 files changed, 17 insertions, 17 deletions

diff --git a/libcxx/test/libcxx/type_traits/convert_to_integral.pass.cpp b/libcxx/test/libcxx/type_traits/convert_to_integral.pass.cpp
index 37060a0521f..34e43c44a1a 100644
--- a/libcxx/test/libcxx/type_traits/convert_to_integral.pass.cpp
+++ b/libcxx/test/libcxx/type_traits/convert_to_integral.pass.cpp
@@ -57,7 +57,7 @@ void check_enum_types()
 }
 
 
-enum enum1 {};
+enum enum1 { zero = 0, one = 1 };
 enum enum2 {
   value = std::numeric_limits<unsigned long>::max()
 };
diff --git a/libcxx/test/std/atomics/atomics.flag/atomic_flag_clear.pass.cpp b/libcxx/test/std/atomics/atomics.flag/atomic_flag_clear.pass.cpp
index 64093d639e4..8a60f8196da 100644
--- a/libcxx/test/std/atomics/atomics.flag/atomic_flag_clear.pass.cpp
+++ b/libcxx/test/std/atomics/atomics.flag/atomic_flag_clear.pass.cpp
@@ -22,13 +22,13 @@
 int main()
 {
     {
-        std::atomic_flag f;
+        std::atomic_flag f = ATOMIC_FLAG_INIT;
         f.test_and_set();
         atomic_flag_clear(&f);
         assert(f.test_and_set() == 0);
     }
     {
-        volatile std::atomic_flag f;
+        volatile std::atomic_flag f = ATOMIC_FLAG_INIT;
         f.test_and_set();
         atomic_flag_clear(&f);
         assert(f.test_and_set() == 0);
diff --git a/libcxx/test/std/atomics/atomics.flag/atomic_flag_clear_explicit.pass.cpp b/libcxx/test/std/atomics/atomics.flag/atomic_flag_clear_explicit.pass.cpp
index e1a9349c939..92e57ecc03f 100644
--- a/libcxx/test/std/atomics/atomics.flag/atomic_flag_clear_explicit.pass.cpp
+++ b/libcxx/test/std/atomics/atomics.flag/atomic_flag_clear_explicit.pass.cpp
@@ -22,37 +22,37 @@
 int main()
 {
     {
-        std::atomic_flag f;
+        std::atomic_flag f = ATOMIC_FLAG_INIT;
         f.test_and_set();
         atomic_flag_clear_explicit(&f, std::memory_order_relaxed);
         assert(f.test_and_set() == 0);
     }
     {
-        std::atomic_flag f;
+        std::atomic_flag f = ATOMIC_FLAG_INIT;
         f.test_and_set();
         atomic_flag_clear_explicit(&f, std::memory_order_release);
         assert(f.test_and_set() == 0);
     }
     {
-        std::atomic_flag f;
+        std::atomic_flag f = ATOMIC_FLAG_INIT;
         f.test_and_set();
         atomic_flag_clear_explicit(&f, std::memory_order_seq_cst);
         assert(f.test_and_set() == 0);
     }
     {
-        volatile std::atomic_flag f;
+        volatile std::atomic_flag f = ATOMIC_FLAG_INIT;
         f.test_and_set();
         atomic_flag_clear_explicit(&f, std::memory_order_relaxed);
         assert(f.test_and_set() == 0);
     }
     {
-        volatile std::atomic_flag f;
+        volatile std::atomic_flag f = ATOMIC_FLAG_INIT;
         f.test_and_set();
         atomic_flag_clear_explicit(&f, std::memory_order_release);
         assert(f.test_and_set() == 0);
     }
     {
-        volatile std::atomic_flag f;
+        volatile std::atomic_flag f = ATOMIC_FLAG_INIT;
         f.test_and_set();
         atomic_flag_clear_explicit(&f, std::memory_order_seq_cst);
         assert(f.test_and_set() == 0);
diff --git a/libcxx/test/std/atomics/atomics.flag/clear.pass.cpp b/libcxx/test/std/atomics/atomics.flag/clear.pass.cpp
index 65051af790d..7c9362680bb 100644
--- a/libcxx/test/std/atomics/atomics.flag/clear.pass.cpp
+++ b/libcxx/test/std/atomics/atomics.flag/clear.pass.cpp
@@ -22,49 +22,49 @@
 int main()
 {
     {
-        std::atomic_flag f;
+        std::atomic_flag f = ATOMIC_FLAG_INIT;
         f.test_and_set();
         f.clear();
         assert(f.test_and_set() == 0);
     }
     {
-        std::atomic_flag f;
+        std::atomic_flag f = ATOMIC_FLAG_INIT;
         f.test_and_set();
         f.clear(std::memory_order_relaxed);
         assert(f.test_and_set() == 0);
     }
     {
-        std::atomic_flag f;
+        std::atomic_flag f = ATOMIC_FLAG_INIT;
         f.test_and_set();
         f.clear(std::memory_order_release);
         assert(f.test_and_set() == 0);
     }
     {
-        std::atomic_flag f;
+        std::atomic_flag f = ATOMIC_FLAG_INIT;
         f.test_and_set();
         f.clear(std::memory_order_seq_cst);
         assert(f.test_and_set() == 0);
     }
     {
-        volatile std::atomic_flag f;
+        volatile std::atomic_flag f = ATOMIC_FLAG_INIT;
         f.test_and_set();
         f.clear();
         assert(f.test_and_set() == 0);
     }
     {
-        volatile std::atomic_flag f;
+        volatile std::atomic_flag f = ATOMIC_FLAG_INIT;
         f.test_and_set();
         f.clear(std::memory_order_relaxed);
         assert(f.test_and_set() == 0);
     }
     {
-        volatile std::atomic_flag f;
+        volatile std::atomic_flag f = ATOMIC_FLAG_INIT;
         f.test_and_set();
         f.clear(std::memory_order_release);
         assert(f.test_and_set() == 0);
     }
     {
-        volatile std::atomic_flag f;
+        volatile std::atomic_flag f = ATOMIC_FLAG_INIT;
         f.test_and_set();
         f.clear(std::memory_order_seq_cst);
         assert(f.test_and_set() == 0);