#ifndef LLVM_FUZZER_DFSAN_H
#define LLVM_FUZZER_DFSAN_H
-#ifndef LLVM_FUZZER_SUPPORTS_DFSAN
-# if defined(__linux__)
-# define LLVM_FUZZER_SUPPORTS_DFSAN 1
-# else
-# define LLVM_FUZZER_SUPPORTS_DFSAN 0
-# endif // __linux__
-#endif // LLVM_FUZZER_SUPPORTS_DFSAN
+#define LLVM_FUZZER_SUPPORTS_DFSAN 0
+#if defined(__has_include)
+# if __has_include(<sanitizer/dfsan_interface.h>)
+# if defined (__linux__)
+# undef LLVM_FUZZER_SUPPORTS_DFSAN
+# define LLVM_FUZZER_SUPPORTS_DFSAN 1
+# include <sanitizer/dfsan_interface.h>
+# endif // __linux__
+# endif
+#endif // defined(__has_include)
-#include <sanitizer/dfsan_interface.h>
#if LLVM_FUZZER_SUPPORTS_DFSAN
extern "C" {
}
} // namespace fuzzer
#else
+// When compiling with a compiler which does not support dfsan,
+// this code is still expected to build (but not necessary work).
+typedef unsigned short dfsan_label;
+struct dfsan_label_info {
+ dfsan_label l1, l2;
+ const char *desc;
+ void *userdata;
+};
namespace fuzzer {
static bool ReallyHaveDFSan() { return false; }
} // namespace fuzzer