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-rw-r--r--nimsuggest/sexp.nim2
1 files changed, 1 insertions, 1 deletions
diff --git a/nimsuggest/sexp.nim b/nimsuggest/sexp.nim
index cee538b6e..31f4988e1 100644
--- a/nimsuggest/sexp.nim
+++ b/nimsuggest/sexp.nim
@@ -409,7 +409,7 @@ macro convertSexp*(x: untyped): untyped =
   ## `%` for every element.
   result = toSexp(x)
 
-proc `==`* (a,b: SexpNode): bool =
+proc `==`* (a, b: SexpNode): bool {.noSideEffect.} =
   ## Check two nodes for equality
   if a.isNil:
     if b.isNil: return true