[libcxx-commits] [libcxx] [libcxx] Handle windows system error code mapping in std::error_code. (PR #93101)

[James Y Knight via libcxx-commits]

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@@ -156,19 +229,52 @@ class _LIBCPP_HIDDEN __system_error_category : public __do_message {
 const char* __system_error_category::name() const noexcept { return "system"; }
 
 string __system_error_category::message(int ev) const {
-#ifdef _LIBCPP_ELAST
+#ifdef _LIBCPP_WIN32API
+  std::string result;
+  char* str               = nullptr;
+  unsigned long num_chars = FormatMessageA(
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jyknight wrote:

Done.

https://github.com/llvm/llvm-project/pull/93101