fix closure iter state table init type [backport] (#20717)

fix closure iter state table init type It is a well-known fact that using closed intervals for ranges is logically, objectively and eternally wrong, as evidenced by this off-by-one.
nim-lang · Oct 31, 2022 · a0653ae · a0653ae
1 parent 52166e3
commit a0653ae
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/compiler/closureiters.nim b/compiler/closureiters.nim
@@ -1155,7 +1155,7 @@ proc newArrayType(g: ModuleGraph; n: int, t: PType; idgen: IdGenerator; owner: P
   result = newType(tyArray, nextTypeId(idgen), owner)
 
   let rng = newType(tyRange, nextTypeId(idgen), owner)
-  rng.n = newTree(nkRange, g.newIntLit(owner.info, 0), g.newIntLit(owner.info, n))
+  rng.n = newTree(nkRange, g.newIntLit(owner.info, 0), g.newIntLit(owner.info, n - 1))
   rng.rawAddSon(t)
 
   result.rawAddSon(rng)