Author: Alex Bradbury
Date: 2022-04-20T14:42:41+01:00
New Revision: bea5e88bcf5908b676da35fb8c64f9f8449ba73b

URL: 
https://github.com/llvm/llvm-project/commit/bea5e88bcf5908b676da35fb8c64f9f8449ba73b
DIFF: 
https://github.com/llvm/llvm-project/commit/bea5e88bcf5908b676da35fb8c64f9f8449ba73b.diff

LOG: [clang][Sema] Fix typo in checkBuiltinArgument helper

The checkBuiltinArgument helper takes an integer ArgIndex and is
documented as performing normal type-checking on that argument. However,
it mistakenly hardcodes the argument index to zero when retrieving the
argument from the call expression.

This hadn't been noticed previously as all in-tree uses typecheck the
0th argument anyway.

Added: 
    

Modified: 
    clang/lib/Sema/SemaChecking.cpp

Removed: 
    


################################################################################
diff  --git a/clang/lib/Sema/SemaChecking.cpp b/clang/lib/Sema/SemaChecking.cpp
index cd069d5664571..f575c0775e7f9 100644
--- a/clang/lib/Sema/SemaChecking.cpp
+++ b/clang/lib/Sema/SemaChecking.cpp
@@ -6222,7 +6222,7 @@ static bool checkBuiltinArgument(Sema &S, CallExpr *E, 
unsigned ArgIndex) {
   InitializedEntity Entity =
     InitializedEntity::InitializeParameter(S.Context, Param);
 
-  ExprResult Arg = E->getArg(0);
+  ExprResult Arg = E->getArg(ArgIndex);
   Arg = S.PerformCopyInitialization(Entity, SourceLocation(), Arg);
   if (Arg.isInvalid())
     return true;


        
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