[llvm] 3706c12 - Prevent copying of ArenaAllocator (#97935)

[via llvm-commits]

Author: smanna12
Date: 2024-07-16T11:04:16-05:00
New Revision: 3706c12c8e2df3bae7ba27ba4645f6eef000bab4

URL: https://github.com/llvm/llvm-project/commit/3706c12c8e2df3bae7ba27ba4645f6eef000bab4
DIFF: https://github.com/llvm/llvm-project/commit/3706c12c8e2df3bae7ba27ba4645f6eef000bab4.diff

LOG: Prevent copying of ArenaAllocator (#97935)

This patch removes copy constructor and assignment operator from
ArenaAllocator class to prevent resource duplication and ensure it
remains non-copyable as per design intent.

Added: 
    

Modified: 
    llvm/include/llvm/Demangle/MicrosoftDemangle.h

Removed: 
    


################################################################################
diff  --git a/llvm/include/llvm/Demangle/MicrosoftDemangle.h b/llvm/include/llvm/Demangle/MicrosoftDemangle.h
index 1529b803debe5..6891185a28e57 100644
--- a/llvm/include/llvm/Demangle/MicrosoftDemangle.h
+++ b/llvm/include/llvm/Demangle/MicrosoftDemangle.h
@@ -54,6 +54,10 @@ class ArenaAllocator {
     }
   }
 
+  // Delete the copy constructor and the copy assignment operator.
+  ArenaAllocator(const ArenaAllocator &) = delete;
+  ArenaAllocator &operator=(const ArenaAllocator &) = delete;
+
   char *allocUnalignedBuffer(size_t Size) {
     assert(Head && Head->Buf);