[PATCH] D121495: [Support] Add const to `FileError::getFileName`

[Ben Barham via Phabricator via llvm-commits]

bnbarham created this revision.
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`getFileName` returns a `StringRef`, there's no reason it shouldn't be
const.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D121495

Files:
  llvm/include/llvm/Support/Error.h


Index: llvm/include/llvm/Support/Error.h
===================================================================
--- llvm/include/llvm/Support/Error.h
+++ llvm/include/llvm/Support/Error.h
@@ -1281,7 +1281,7 @@
     return OS.str();
   }
 
-  StringRef getFileName() { return FileName; }
+  StringRef getFileName() const { return FileName; }
 
   Error takeError() { return Error(std::move(Err)); }
 


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