1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
|
Description: workaround for Clang __builtin_expect() bug
An integer overflow in clang causes __builtin_expect() to return
incorrect values.
.
The bug was fixed in r85666 and is detailed here:
http://www.mail-archive.com/cfe-commits@cs.uiuc.edu/msg16356.html
.
Bug: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=588711
Author: Mark Heily <mark@heily.com>
Index: libdispatch-0~svn188/src/internal.h
===================================================================
--- libdispatch-0~svn188.orig/src/internal.h 2010-07-10 21:16:59.000000000 -0400
+++ libdispatch-0~svn188/src/internal.h 2010-07-10 21:17:43.000000000 -0400
@@ -137,7 +137,7 @@
#define NSEC_PER_USEC 1000ull
/* I wish we had __builtin_expect_range() */
-#if __GNUC__
+#if 0
#define fastpath(x) ((typeof(x))__builtin_expect((long)(x), ~0l))
#define slowpath(x) ((typeof(x))__builtin_expect((long)(x), 0l))
#else
|
