C preprocessor test case

Bart Wiegmans · Bart Wiegmans · commit 80560a3aebad · 2017-07-06T15:01:37.000+02:00
diff --git a/c/macro.c b/c/macro.c
@@ -0,0 +1,12 @@
+#define COMMA ,
+#define FOO(_) _(x) COMMA _(y) COMMA _(z) COMMA _(c)
+#define SHIFT(x) (1 << (x))
+#define ID(x) x
+static int foo[] = { FOO(ID) }
+#undef COMMA
+#define COMMA |
+int i = FOO(SHIFT);
+#undef COMMA
+#define COMMA
+#define UNDERSCORE(x) _ ## x
+FOO(UNDERSCORE)
