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-rw-r--r--compiler/options.nim4
1 files changed, 4 insertions, 0 deletions
diff --git a/compiler/options.nim b/compiler/options.nim
index 50bae9557..52ba8254a 100644
--- a/compiler/options.nim
+++ b/compiler/options.nim
@@ -146,6 +146,10 @@ type
       ## Allows to modify a NimNode where the type has already been
       ## flagged with nfSem. If you actually do this, it will cause
       ## bugs.
+    checkUnsignedConversions
+      ## Historically and especially in version 1.0.0 of the language
+      ## conversions to unsigned numbers were checked. In 1.0.4 they
+      ## are not anymore.
 
   SymbolFilesOption* = enum
     disabledSf, writeOnlySf, readOnlySf, v2Sf