[clang] [clang-tools-extra] [clang][Analysis] Handle const-qualified pointer refs in `ExprMutationAnalyzer` (PR #190421)

[Daniil Dudkin via cfe-commits]

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@@ -1801,6 +1809,31 @@ TEST(ExprMutationAnalyzerTest, PointeeMutatedByPassAsArgument) {
         match(withEnclosingCompound(declRefTo("x")), AST->getASTContext());
     EXPECT_TRUE(isPointeeMutated(Results, AST.get()));
   }
+  {
+    const std::string Code =
+        "void b(int *const &); void f() { int* x = nullptr; b(x); }";
+    auto AST = buildASTFromCodeWithArgs(Code, {});
+    auto Results =
+        match(withEnclosingCompound(declRefTo("x")), AST->getASTContext());
+    EXPECT_TRUE(isPointeeMutated(Results, AST.get()));
+  }
+  {
+    const std::string Code =
+        "void b(int *const &&); void f() { int* x = nullptr; "
+        "b(static_cast<int *const &&>(x)); }";
+    auto AST = buildASTFromCodeWithArgs(Code, {});
+    auto Results =
+        match(withEnclosingCompound(declRefTo("x")), AST->getASTContext());
+    EXPECT_TRUE(isPointeeMutated(Results, AST.get()));
+  }
+  {
+    const std::string Code = "using IntPtr = int *; void b(IntPtr const &); "
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unterumarmung wrote:

Done

https://github.com/llvm/llvm-project/pull/190421