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-rw-r--r--lib/pure/memfiles.nim5
1 files changed, 2 insertions, 3 deletions
diff --git a/lib/pure/memfiles.nim b/lib/pure/memfiles.nim
index d1a006eee..277c4ddb6 100644
--- a/lib/pure/memfiles.nim
+++ b/lib/pure/memfiles.nim
@@ -372,9 +372,8 @@ proc `==`*(x, y: MemSlice): bool =
 
 proc `$`*(ms: MemSlice): string {.inline.} =
   ## Return a Nim string built from a MemSlice.
-  var buf = newString(ms.size)
-  copyMem(addr(buf[0]), ms.data, ms.size)
-  result = buf
+  result.setLen(ms.size)
+  copyMem(addr(result[0]), ms.data, ms.size)
 
 iterator memSlices*(mfile: MemFile, delim='\l', eat='\r'): MemSlice {.inline.} =
   ## Iterates over [optional `eat`] `delim`-delimited slices in MemFile `mfile`.