diff options
Diffstat (limited to 'lib/system.nim')
| -rw-r--r-- | lib/system.nim | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/system.nim b/lib/system.nim index ac259c560..3bb632536 100644 --- a/lib/system.nim +++ b/lib/system.nim @@ -2664,6 +2664,8 @@ when hostOS != "standalone": proc `[]`*[Idx, T](a: array[Idx, T], x: TSlice[int]): seq[T] = ## slice operation for arrays. Negative indexes are **not** supported ## because the array might have negative bounds. + when low(a) < 0: + {.error: "Slicing for arrays with negative indices is unsupported.".} var L = x.b - x.a + 1 newSeq(result, L) for i in 0.. <L: result[i] = a[i + x.a] @@ -2671,6 +2673,8 @@ proc `[]`*[Idx, T](a: array[Idx, T], x: TSlice[int]): seq[T] = proc `[]=`*[Idx, T](a: var array[Idx, T], x: TSlice[int], b: openArray[T]) = ## slice assignment for arrays. Negative indexes are **not** supported ## because the array might have negative bounds. + when low(a) < 0: + {.error: "Slicing for arrays with negative indices is unsupported.".} var L = x.b - x.a + 1 if L == b.len: for i in 0 .. <L: a[i+x.a] = b[i] |