================
@@ -0,0 +1,50 @@
+.. title:: clang-tidy - misc-scope-reduction
+
+misc-scope-reduction
+===========================
+
+Detects local variables in functions whose scopes can be minimized. This check
+covers guidelines described by SEI DCL19-C, MISRA C++:2008 Rule 3-4-1, and
MISRA
+C:2012 Rule 8-9.
+
+Examples:
+
+.. code-block:: cpp
+
+ void test_deep_nesting() {
+ int deep = 1; // 'deep' can be declared in a smaller scope
+ if (true) {
+ if (true) {
+ if (true) {
+ if (true) {
+ int result = deep * 4;
+ }
+ }
+ }
+ }
+ }
+
+ void test_switch_multiple_cases(int value) {
+ int accumulator = 0; // 'accumulator' can be declared in a smaller scope
+ switch (value) {
+ case 1:
+ accumulator += 10;
+ break;
+ case 2:
+ accumulator += 20;
+ break;
+ }
+ }
+
+ void test_for_loop_expressions() {
+ int i; // 'i' can be declared in the for-loop initialization
+ for (i = 0; i < 5; i++) {
+ // loop body
+ }
+ }
+
+References
+----------
----------------
zeyi2 wrote:
```suggestion
----------
```
https://github.com/llvm/llvm-project/pull/175429
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