translate-c: handle macros that cast to cv void

Fixes #9507

2 files changed, 25 insertions, 0 deletions

diff --git a/test/behavior/translate_c_macros.h b/test/behavior/translate_c_macros.h
index 6f458684c7..bff4cdfe23 100644
--- a/test/behavior/translate_c_macros.h
+++ b/test/behavior/translate_c_macros.h
@@ -18,3 +18,15 @@ struct Foo {
 #define SIZE_OF_FOO sizeof(struct Foo)
 
 #define MAP_FAILED	((void *) -1)
+
+#define IGNORE_ME_1(x) ((void)(x))
+#define IGNORE_ME_2(x) ((const void)(x))
+#define IGNORE_ME_3(x) ((volatile void)(x))
+#define IGNORE_ME_4(x) ((const volatile void)(x))
+#define IGNORE_ME_5(x) ((volatile const void)(x))
+
+#define IGNORE_ME_6(x) (void)(x)
+#define IGNORE_ME_7(x) (const void)(x)
+#define IGNORE_ME_8(x) (volatile void)(x)
+#define IGNORE_ME_9(x) (const volatile void)(x)
+#define IGNORE_ME_10(x) (volatile const void)(x)
diff --git a/test/behavior/translate_c_macros.zig b/test/behavior/translate_c_macros.zig
index 8de06ae8ea..0daf4cec90 100644
--- a/test/behavior/translate_c_macros.zig
+++ b/test/behavior/translate_c_macros.zig
@@ -24,3 +24,16 @@ test "reference to a struct type" {
 test "cast negative integer to pointer" {
     try expectEqual(@intToPtr(?*c_void, @bitCast(usize, @as(isize, -1))), h.MAP_FAILED);
 }
+
+test "casting to void with a macro" {
+    h.IGNORE_ME_1(42);
+    h.IGNORE_ME_2(42);
+    h.IGNORE_ME_3(42);
+    h.IGNORE_ME_4(42);
+    h.IGNORE_ME_5(42);
+    h.IGNORE_ME_6(42);
+    h.IGNORE_ME_7(42);
+    h.IGNORE_ME_8(42);
+    h.IGNORE_ME_9(42);
+    h.IGNORE_ME_10(42);
+}