[clang-tools-extra] [Clang-Tidy] Add google-runtime-float Clang-Tidy check (PR #156763)

[via cfe-commits]

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@@ -0,0 +1,39 @@
+// RUN: %check_clang_tidy %s google-runtime-float %t
+
+long double foo;
+// CHECK-MESSAGES: :[[@LINE-1]]:1: warning: 'long double' type is not portable and should not be used [google-runtime-float]
+
+typedef long double MyLongDouble;
+// CHECK-MESSAGES: :[[@LINE-1]]:9: warning: 'long double' type is not portable and should not be used [google-runtime-float]
+
+typedef long double MyOtherLongDouble; // NOLINT
+
+template <typename T>
+void tmpl() { T i; }
+
+long volatile double v = 10;
+// CHECK-MESSAGES: :[[@LINE-1]]:1: warning: 'volatile long double' type is not portable and should not be used [google-runtime-float]
+
+long double h(long const double aaa, long double bbb = 0.5L) {
+  // CHECK-MESSAGES: :[[@LINE-1]]:1: warning: 'long double' type is not portable and should not be used [google-runtime-float]
+  // CHECK-MESSAGES: :[[@LINE-2]]:15: warning: 'const long double' type is not portable and should not be used [google-runtime-float]
+  // CHECK-MESSAGES: :[[@LINE-3]]:38: warning: 'long double' type is not portable and should not be used [google-runtime-float]
+  // CHECK-MESSAGES: :[[@LINE-4]]:56: warning: 'long double' type from literal suffix 'L' is not portable and should not be used [google-runtime-float]
+  double x = 0.1;
+  double y = 0.2L;
+  // CHECK-MESSAGES: :[[@LINE-1]]:14: warning: 'long double' type from literal suffix 'L' is not portable and should not be used [google-runtime-float]
+#define ldtype long double
+  ldtype z;
+  tmpl<long double>();
+  // CHECK-MESSAGES: :[[@LINE-1]]:8: warning: 'long double' type is not portable and should not be used [google-runtime-float]
+  return 0;
+}
+
+struct S{};
+constexpr S operator"" _baz(unsigned long long) {
+  long double j;
+  // CHECK-MESSAGES: :[[@LINE-1]]:3: warning: 'long double' type is not portable and should not be used [google-runtime-float]
+  MyOtherLongDouble x;
+  return S{};
+}
+
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brenfwd wrote:

Done

https://github.com/llvm/llvm-project/pull/156763