From dc241dc1bf6a237a69cec008c1cb98082160524c Mon Sep 17 00:00:00 2001
From: theraven <theraven@72102866-910b-0410-8b05-ffd578937521>
Date: Wed, 19 Mar 2014 07:26:52 +0000
Subject: [PATCH] Make sure that we flush the instruction cache when creating a
 new IMP at run time.

---
 block_to_imp.c | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/block_to_imp.c b/block_to_imp.c
index c5c31a0..9e0e639 100644
--- a/block_to_imp.c
+++ b/block_to_imp.c
@@ -17,6 +17,13 @@
 #include "lock.h"
 #include "visibility.h"
 
+#if __has_builtin(__builtin___clear_cache)
+#	define clear_cache __builtin___clear_cache
+#else
+void __clear_cache(void* start, void* end);
+#	define clear_cache __clear_cache
+#endif
+
 
 /* QNX needs a special header for asprintf() */
 #ifdef __QNXNTO__
@@ -122,7 +129,9 @@ IMP imp_implementationWithBlock(void *block)
 	out[1] = Block_copy(b);
 	memcpy(&out[2], start, trampolineSize);
 	out = buf.x;
-	return (IMP)&out[2];
+	char *newIMP = (char*)&out[2];
+	clear_cache(newIMP, newIMP+trampolineSize);
+	return (IMP)newIMP;
 }
 
 static void* isBlockIMP(void *anIMP)