From df550874cd546a85074edc35bebeb3cd0530622b Mon Sep 17 00:00:00 2001
From: Yuqian Yang <crupest@crupest.life>
Date: Mon, 8 Sep 2025 00:50:49 +0800
Subject: Make inner exception shared.

---
 include/cru/base/Exception.h | 13 ++++++++-----
 src/base/Exception.cpp       |  4 ++--
 2 files changed, 10 insertions(+), 7 deletions(-)

diff --git a/include/cru/base/Exception.h b/include/cru/base/Exception.h
index 6f0727ce..f42406e0 100644
--- a/include/cru/base/Exception.h
+++ b/include/cru/base/Exception.h
@@ -12,9 +12,9 @@ namespace cru {
 class CRU_BASE_API Exception : public std::exception {
  public:
   explicit Exception(std::string message = "",
-                     std::unique_ptr<std::exception> inner = nullptr);
+                     std::shared_ptr<std::exception> inner = nullptr);
   explicit Exception(StringView message,
-                     std::unique_ptr<std::exception> inner = nullptr);
+                     std::shared_ptr<std::exception> inner = nullptr);
 
   ~Exception() override;
 
@@ -37,14 +37,17 @@ class CRU_BASE_API Exception : public std::exception {
 
   [[deprecated("Use void SetMessage(std::string message) instead.")]]
   void SetMessage(StringView message);
-  [[deprecated("Use void AppendMessage(std::string_view additional_message) instead.")]]
+  [[deprecated(
+      "Use void AppendMessage(std::string_view additional_message) instead.")]]
   void AppendMessage(StringView additional_message);
-  [[deprecated("Use void AppendMessage(std::optional<std::string_view> additional_message) instead.")]]
+  [[deprecated(
+      "Use void AppendMessage(std::optional<std::string_view> "
+      "additional_message) instead.")]]
   void AppendMessage(std::optional<StringView> additional_message);
 
  private:
   std::string message_;
-  std::unique_ptr<std::exception> inner_;
+  std::shared_ptr<std::exception> inner_;
 };
 
 class CRU_BASE_API PlatformException : public Exception {
diff --git a/src/base/Exception.cpp b/src/base/Exception.cpp
index a92b6953..1f03c2ba 100644
--- a/src/base/Exception.cpp
+++ b/src/base/Exception.cpp
@@ -7,10 +7,10 @@
 constexpr auto NO_MESSAGE = "No message.";
 
 namespace cru {
-Exception::Exception(std::string message, std::unique_ptr<std::exception> inner)
+Exception::Exception(std::string message, std::shared_ptr<std::exception> inner)
     : message_(std::move(message)), inner_(std::move(inner)) {}
 
-Exception::Exception(StringView message, std::unique_ptr<std::exception> inner)
+Exception::Exception(StringView message, std::shared_ptr<std::exception> inner)
     : message_(message.ToUtf8()), inner_(std::move(inner)) {}
 
 Exception::~Exception() {}
-- 
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