Avoid UB in test selection macro. (#3407)
This fixes the gcc "warning: this use of "defined" may not be portable [-Wexpansion-to-defined]"
See discussion in http://bugs.python.org/issue29505
diff --git a/Modules/_xxtestfuzz/fuzzer.c b/Modules/_xxtestfuzz/fuzzer.c
index 36f721e..b50eb65 100644
--- a/Modules/_xxtestfuzz/fuzzer.c
+++ b/Modules/_xxtestfuzz/fuzzer.c
@@ -105,16 +105,14 @@
int rv = 0;
-#define _Py_FUZZ_YES(test_name) (defined(_Py_FUZZ_##test_name) || !defined(_Py_FUZZ_ONE))
-#if _Py_FUZZ_YES(fuzz_builtin_float)
+#if !defined(_Py_FUZZ_ONE) || defined(_Py_FUZZ_fuzz_builtin_float)
rv |= _run_fuzz(data, size, fuzz_builtin_float);
#endif
-#if _Py_FUZZ_YES(fuzz_builtin_int)
+#if !defined(_Py_FUZZ_ONE) || defined(_Py_FUZZ_fuzz_builtin_int)
rv |= _run_fuzz(data, size, fuzz_builtin_int);
#endif
-#if _Py_FUZZ_YES(fuzz_builtin_unicode)
+#if !defined(_Py_FUZZ_ONE) || defined(_Py_FUZZ_fuzz_builtin_unicode)
rv |= _run_fuzz(data, size, fuzz_builtin_unicode);
#endif
-#undef _Py_FUZZ_YES
return rv;
}