[libc-commits] [libc] [libc] Add -Werror for libc tests (PR #160413)

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``````````bash
git-clang-format --diff origin/main HEAD --extensions cpp -- libc/test/src/math/exhaustive/bfloat16_sub_test.cpp libc/test/src/stdio/fileop_test.cpp
``````````

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View the diff from clang-format here.
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``````````diff
diff --git a/libc/test/src/math/exhaustive/bfloat16_sub_test.cpp b/libc/test/src/math/exhaustive/bfloat16_sub_test.cpp
index c3d0d5c3b..350af5293 100644
--- a/libc/test/src/math/exhaustive/bfloat16_sub_test.cpp
+++ b/libc/test/src/math/exhaustive/bfloat16_sub_test.cpp
@@ -23,8 +23,9 @@ struct Bfloat16SubChecker : public virtual LIBC_NAMESPACE::testing::Test {
   using FPBits = LIBC_NAMESPACE::fputil::FPBits<bfloat16>;
   using StorageType = typename FPBits::StorageType;
 
-  uint64_t check(uint16_t x_start, uint16_t x_stop, [[maybe_unused]] uint16_t y_start,
-                 uint16_t y_stop, mpfr::RoundingMode rounding) {
+  uint64_t check(uint16_t x_start, uint16_t x_stop,
+                 [[maybe_unused]] uint16_t y_start, uint16_t y_stop,
+                 mpfr::RoundingMode rounding) {
     mpfr::ForceRoundingMode r(rounding);
     if (!r.success)
       return true;

``````````

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https://github.com/llvm/llvm-project/pull/160413