[libcxx-commits] [libcxx] [libc++] Applied `[[nodiscard]` to `<exception>`, `<stdexcept>` and `<system_error>` (PR #170837)

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``````````bash
git-clang-format --diff origin/main HEAD --extensions ,h,cpp -- libcxx/test/libcxx/diagnostics/syserr/nodiscard.verify.cpp libcxx/include/__exception/exception.h libcxx/include/__exception/nested_exception.h libcxx/include/__exception/operations.h libcxx/include/__system_error/error_category.h libcxx/include/__system_error/error_code.h libcxx/include/__system_error/error_condition.h libcxx/include/__system_error/system_error.h libcxx/include/stdexcept libcxx/test/libcxx/language.support/nodiscard.verify.cpp --diff_from_common_commit
``````````

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View the diff from clang-format here.
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``````````diff
diff --git a/libcxx/test/libcxx/language.support/nodiscard.verify.cpp b/libcxx/test/libcxx/language.support/nodiscard.verify.cpp
index db5632d25..9957a6f4d 100644
--- a/libcxx/test/libcxx/language.support/nodiscard.verify.cpp
+++ b/libcxx/test/libcxx/language.support/nodiscard.verify.cpp
@@ -86,7 +86,7 @@ void test() {
 #endif
 
   { // <exception>
-    std:: bad_exception bex;
+    std::bad_exception bex;
 
     bex.what(); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
 

``````````

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https://github.com/llvm/llvm-project/pull/170837