1 files changed, 43 insertions, 0 deletions
diff --git a/validation/preprocessor/has-builtin.c b/validation/preprocessor/has-builtin.c
new file mode 100644
index 00000000..03272fc9
--- /dev/null
+++ b/validation/preprocessor/has-builtin.c
@@ -0,0 +1,43 @@
+#ifndef __has_builtin
+__has_builtin()??? Quesako?
+#define __has_builtin(x) 0
+#else
+"has __has_builtin(), yeah!"
+#endif
+
+#if __has_builtin(nothing)
+#error "not a builtin!"
+#endif
+
+#if __has_builtin(__builtin_offsetof)		\
+ || __has_builtin(__builtin_types_compatible_p)
+#error "builtin ops are not builtin functions!"
+#endif
+
+#if __has_builtin(__builtin_va_list)		\
+ || __has_builtin(__builtin_ms_va_list)
+#error "builtin types are not builtin functions!"
+#endif
+
+#if __has_builtin(__builtin_abs)
+abs
+#endif
+
+#if __has_builtin(__builtin_constant_p)
+constant_p
+#endif
+
+123 __has_builtin(abc) def
+
+/*
+ * check-name: has-builtin
+ * check-command: sparse -E $file
+ *
+ * check-output-start
+
+"has __has_builtin(), yeah!"
+abs
+constant_p
+123 0 def
+ * check-output-end
+ */