[llvm] 4b46509 - [JSON] Fix uninitialized variable warning

[Jonas Devlieghere via llvm-commits]

Author: Jonas Devlieghere
Date: 2023-04-07T14:02:42-07:00
New Revision: 4b4650948af347c73fcf812645c2afd1955bc083

URL: https://github.com/llvm/llvm-project/commit/4b4650948af347c73fcf812645c2afd1955bc083
DIFF: https://github.com/llvm/llvm-project/commit/4b4650948af347c73fcf812645c2afd1955bc083.diff

LOG: [JSON] Fix uninitialized variable warning

Fix uninitialized variable warning when deserializing a std::optional<E>
where is an enum type.

JSON.h:771:20: warning: variable 'Result' is uninitialized when used here [-Wuninitialized]
  if (!fromJSON(E, Result, P))
                   ^~~~~~

Added: 
    

Modified: 
    llvm/include/llvm/Support/JSON.h

Removed: 
    


################################################################################
diff  --git a/llvm/include/llvm/Support/JSON.h b/llvm/include/llvm/Support/JSON.h
index d35089122941..97f32dffb4f6 100644
--- a/llvm/include/llvm/Support/JSON.h
+++ b/llvm/include/llvm/Support/JSON.h
@@ -767,7 +767,7 @@ bool fromJSON(const Value &E, std::optional<T> &Out, Path P) {
     Out = std::nullopt;
     return true;
   }
-  T Result;
+  T Result = {};
   if (!fromJSON(E, Result, P))
     return false;
   Out = std::move(Result);