1 files changed, 87 insertions, 0 deletions
diff --git a/clang-tools-extra/test/clang-tidy/cppcoreguidelines-pro-bounds-pointer-arithmetic.cpp b/clang-tools-extra/test/clang-tidy/cppcoreguidelines-pro-bounds-pointer-arithmetic.cpp
new file mode 100644
index 00000000000..b765f00bd37
--- /dev/null
+++ b/clang-tools-extra/test/clang-tidy/cppcoreguidelines-pro-bounds-pointer-arithmetic.cpp
@@ -0,0 +1,87 @@
+// RUN: %python %S/check_clang_tidy.py %s cppcoreguidelines-pro-bounds-pointer-arithmetic %t
+
+enum E {
+  ENUM_LITERAL = 1
+};
+
+int i = 4;
+int j = 1;
+int *p = 0;
+int *q = 0;
+
+void fail() {
+  q = p + 4;
+  // CHECK-MESSAGES: :[[@LINE-1]]:9: warning: do not use pointer arithmetic [cppcoreguidelines-pro-bounds-pointer-arithmetic]
+  p = q + i;
+  // CHECK-MESSAGES: :[[@LINE-1]]:9: warning: do not use pointer arithmetic
+  p = q + ENUM_LITERAL;
+  // CHECK-MESSAGES: :[[@LINE-1]]:9: warning: do not use pointer arithmetic
+
+  q = p - 1;
+  // CHECK-MESSAGES: :[[@LINE-1]]:9: warning: do not use pointer arithmetic
+  p = q - i;
+  // CHECK-MESSAGES: :[[@LINE-1]]:9: warning: do not use pointer arithmetic
+  p = q - ENUM_LITERAL;
+  // CHECK-MESSAGES: :[[@LINE-1]]:9: warning: do not use pointer arithmetic
+
+  p += 4;
+  // CHECK-MESSAGES: :[[@LINE-1]]:5: warning: do not use pointer arithmetic
+  p += i;
+  // CHECK-MESSAGES: :[[@LINE-1]]:5: warning: do not use pointer arithmetic
+  p += ENUM_LITERAL;
+  // CHECK-MESSAGES: :[[@LINE-1]]:5: warning: do not use pointer arithmetic
+
+  q -= 1;
+  // CHECK-MESSAGES: :[[@LINE-1]]:5: warning: do not use pointer arithmetic
+  q -= i;
+  // CHECK-MESSAGES: :[[@LINE-1]]:5: warning: do not use pointer arithmetic
+  q -= ENUM_LITERAL;
+  // CHECK-MESSAGES: :[[@LINE-1]]:5: warning: do not use pointer arithmetic
+
+  p++;
+  // CHECK-MESSAGES: :[[@LINE-1]]:4: warning: do not use pointer arithmetic
+  ++p;
+  // CHECK-MESSAGES: :[[@LINE-1]]:3: warning: do not use pointer arithmetic
+
+  p--;
+  // CHECK-MESSAGES: :[[@LINE-1]]:4: warning: do not use pointer arithmetic
+  --p;
+  // CHECK-MESSAGES: :[[@LINE-1]]:3: warning: do not use pointer arithmetic
+
+  i = p[1];
+  // CHECK-MESSAGES: :[[@LINE-1]]:7: warning: do not use pointer arithmetic
+}
+
+struct S {
+  operator int() const;
+};
+
+void f(S &s) {
+  int *i;
+  i = i + s;
+  // CHECK-MESSAGES: :[[@LINE-1]]:9: warning: do not use pointer arithmetic
+}
+
+void f2(int i[]) {
+  i[1] = 0;
+  // CHECK-MESSAGES: :[[@LINE-1]]:3: warning: do not use pointer arithmetic
+}
+
+void okay() {
+  int a[3];
+  i = a[2]; // OK, access to array
+
+  p = q;
+  p = &i;
+
+  i++;
+  ++i;
+  i--;
+  --i;
+  i += 1;
+  i -= 1;
+  i = j + 1;
+  i = j - 1;
+
+  auto diff = p - q; // OK, result is arithmetic
+}