Imported Upstream version 6.10.0.49

Former-commit-id: 1d6753294b2993e1fbf92de9366bb9544db4189b

external/llvm-project/clang-tools-extra/test/clang-tidy/readability-misplaced-array-index.cpp

@@ -0,0 +1,34 @@
+// RUN: %check_clang_tidy %s readability-misplaced-array-index %t
+
+#define ABC  "abc"
+
+struct XY { int *X; int *Y; };
+
+void dostuff(int);
+
+void unusualSyntax(int *P1, struct XY *P2) {
+  10[P1] = 0;
+  // CHECK-MESSAGES: :[[@LINE-1]]:3: warning: confusing array subscript expression, usually the index is inside the []
+  // CHECK-FIXES: P1[10] = 0;
+
+  10[P2->X] = 0;
+  // CHECK-MESSAGES: :[[@LINE-1]]:3: warning: confusing array subscript expression
+  // CHECK-FIXES: P2->X[10] = 0;
+
+  dostuff(1["abc"]);
+  // CHECK-MESSAGES: :[[@LINE-1]]:11: warning: confusing array subscript expression
+  // CHECK-FIXES:  dostuff("abc"[1]);
+
+  dostuff(1[ABC]);
+  // CHECK-MESSAGES: :[[@LINE-1]]:11: warning: confusing array subscript expression
+  // CHECK-FIXES:  dostuff(ABC[1]);
+
+  dostuff(0[0 + ABC]);
+  // CHECK-MESSAGES: :[[@LINE-1]]:11: warning: confusing array subscript expression
+  // CHECK-FIXES:  dostuff(0[0 + ABC]);
+  // No fixit. Probably the code should be ABC[0]
+}
+
+void normalSyntax(int *X) {
+  X[10] = 0;
+}