[clang-tools-extra] [clang-tidy] Ignore default ctor with user provided argument in `readability-container-size-empty` (PR #154782)

[via cfe-commits]

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@@ -908,3 +908,37 @@ class foo : public std::string{
 };
 
 }
+
+namespace GH154762 {
+class TypeRange {
+  std::vector<int> b;
+
+public:
+  TypeRange(std::vector<int> b = {});
+  TypeRange(int);
+  bool operator==(const TypeRange& other) const;
+
+  size_t size() const {
+    return b.size();
+  }
+
+  bool empty() const {
+    return size() == 0;
+  }
+};
+
+void foo(std::vector<int> v) {
+  if (TypeRange(1) == TypeRange(v)) { // no warning
+  }
+
+  if (TypeRange(1) == TypeRange()) {
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flovent wrote:

I don't think they are FPs, when calling a non-default ctor or default ctor with user-provided argument, it means this container is not empty, and `TypeRange()` should have zero size since it's default constructed, so it's reasonable to give a suggestion of using `empty` here.

https://github.com/llvm/llvm-project/pull/154782