feat(detectors): CellOverflow->CellBounds

nowarp · Nov 21, 2024 · b7edcd7 · b7edcd7
1 parent 15a5bcd
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Showing 3 changed files with 12 additions and 7 deletions.
diff --git a/docs/detectors.md b/docs/detectors.md
@@ -12,7 +12,7 @@ title: Detectors Overview
 | 1  | [ArgCopyMutation](./detectors/ArgCopyMutation.md) | High |  | ✔ |
 | 2  | [AsmIsUsed](./detectors/AsmIsUsed.md) | Info |  |  |
 | 3  | [BranchDuplicate](./detectors/BranchDuplicate.md) | High |  | ✔ |
-| 4  | [CellOverflow](./detectors/CellOverflow.md) | Critical |  | ✔ |
+| 4  | [CellBounds](./detectors/CellBounds.md) | Critical |  | ✔ |
 | 5  | [ConstantAddress](./detectors/ConstantAddress.md) | Info |  |  |
 | 6  | [DivideBeforeMultiply](./detectors/DivideBeforeMultiply.md) | High | ✔ | ✔ |
 | 7  | [DumpIsUsed](./detectors/DumpIsUsed.md) | Info |  |  |

diff --git a/docs/detectors/CellOverflow.md → docs/detectors/CellBounds.md b/docs/detectors/CellOverflow.md → docs/detectors/CellBounds.md
@@ -1,15 +1,20 @@
-# CellOverflow
-A detector that identifies cell overflow problems.
+# CellBounds
+A detector that identifies cell overflow and underflow problems.
 
 ## Why is it bad?
-Cell overflow is an issue specific to the TON blockchain. TON stores data in
-cells, which are low-level data structures used for serialization and deserialization.
+Cell overflow and underflow are issues specific to the TON blockchain. TON
+stores data in cells, which are low-level data structures used for serialization
+and deserialization.
 
 The overflow issue occurs when the user attempts to store more data in a cell
 than it supports. The current limitation is 1023 bits and 4 references to other
 cells. When these limits are exceeded, the contract throws an error with the
 exit code `8` during the compute phase.
 
+The underflow issue occurs when the user attempts to get more data from a
+structure than it supports. cells. When it happens, the contract throws an
+error with the exit code `9` during the compute phase.
+
 ## Example
 ```tact
 // Bad: storeRef is used more than 4 times

diff --git a/sidebars.ts b/sidebars.ts
@@ -72,8 +72,8 @@ const sidebars: SidebarsConfig = {
         },
         {
           type: 'doc',
-          id: 'detectors/CellOverflow',
-          label: 'CellOverflow',
+          id: 'detectors/CellBounds',
+          label: 'CellBounds',
         },
         {
           type: 'doc',