[pstl] Remove various warnings in the pstl headers and tests

- unused parameter warnings
- don't use single-letter template parameter names, like we do in libc++
- sign-comparison warnings
- unused variables in the tests
- unused local typedefs in the tests
- the use of #include_next
- field reordering in the tests
- unused lambda captures

Note that the rationale for why the static_casts to unsigned are OK is
that last - first must always be non-negative, since [first, last) is
a valid range.

llvm-svn: 362148

1 files changed, 1 insertions, 1 deletions

diff --git a/pstl/test/std/algorithms/alg.nonmodifying/equal.pass.cpp b/pstl/test/std/algorithms/alg.nonmodifying/equal.pass.cpp
index ea4c09ec18d..192babb29e0 100644
--- a/pstl/test/std/algorithms/alg.nonmodifying/equal.pass.cpp
+++ b/pstl/test/std/algorithms/alg.nonmodifying/equal.pass.cpp
@@ -20,10 +20,10 @@ using namespace TestUtils;
 
 struct UserType
 {
+    size_t key;
     float32_t f;
     float64_t d;
     int32_t i;
-    size_t key;
 
     bool
     operator()(UserType a, UserType b)