and now for something completely different: assembly maybestret-IMPL

forwarding functions for atomicity

1 files changed, 26 insertions, 0 deletions

diff --git a/test/test-imp-forwarding.m b/test/test-imp-forwarding.m
new file mode 100644
index 0000000..da2ece2
--- /dev/null
+++ b/test/test-imp-forwarding.m
@@ -0,0 +1,26 @@
+#include "../lib/objc.c"
+#include <objc/runtime.h>
+#include <stdio.h>
+
+static void imp1(id self, SEL sel, int a, int b) {
+    printf("imp1: self=%p sel=%s a=%d b=%d\n", self, sel_getName(sel), a, b);
+}
+
+struct big {
+    int x[10];
+};
+
+static struct big imp2(id self, SEL sel, int a, int b) {
+    printf("imp2: self=%p sel=%s a=%d b=%d\n", self, sel_getName(sel), a, b);
+    return (struct big) {{0}};
+}
+
+int main() {
+    IMP old = (IMP) imp1;
+    SEL sel = @selector(some);
+    struct temp_block_literal temp_block = get_temp_block(&old, sel);
+    IMP new = imp_implementationWithBlock((id) &temp_block);
+    ((void (*)(id, SEL, int, int)) new)(@"foo", sel, 1, 2);
+    old = (IMP) imp2;
+    ((struct big (*)(id, SEL, int, int)) new)(@"bar", sel, 1, 2);
+}